As part of my bid for early sainthood, I actually check these links on a regular basis. It takes hours, but you're worth it. I expect you're filled with gratitude and lingering admiration (money, gifts etc. to the usual address). All links last checked: 4th Sept 2006.

If you find flubs, they must be fairly new. Tell me and I'll fix 'em. Please link to this site! The address is http://www.ianrowland.com/ . I'll reciprocate.

Top 3 recommendations for Sep/Oct 2006:
Sandlot Optical illusions and visual oddities. Superb site
Cockeyed Delightfully nutty practical experiments - how much ink is inside a pen? etc.
Rotten Tomatoes Ad-saturated but otherwise good site harvesting movie reviews

Success and personal fulfilment

Winning Spirit Great site for success-seekers run by my impressive pal Kath Hawkins!
Body For Life Highly recommended health and fitness site. Buy the book
Coach U Knowledge Base Pick a category, get wisdom! The ultimate rent-a-quote!
Dominic O'Brien & Peak Performance 8 times World Memory Champion at large
ExRx 1000 pages of information about health, fitness and exercise
Free Trainers Lots of good, free advice about exercise, fitness and health
How To Be Creative A great article
Personal-development.Com Lots of links and info. Fill your boots
Sleepnet Insomnia and all other sleep issues
Steve's Primer Of Practical Persuasion & Influence Good guide to persuasive strategies
Stress Management Tips & Resources Lots more advice
Touchpoint coaching Yet more links - a deluge of success-themed links

Working for yourself and running your own site

Amway Sucks Tempted by multi-level marketing? Read this first...
Annoyances Org Devoted to annoying aspects of Msoft Windows, and some remedies
Counterpane Internet Security Commercial site, but ood for free info about net security
Dox desk Superb! Free detection of computer parasites, and how to get rid of them
Net Lingo De-baffling net and computer jargon
PanicWare Some useful anti-advertising and anti-spam tools
PayPal Warning How shall we take payment? Let's use PayPal! Read this first...
PayPal Sucks And another site with some Paypal information
Printing.com Instant business cards and suchlike. I've used them. Very good
Spam Cop An anti-spam resource
What's running at Start Up? Useful and rarely-explained system info for your PC
What Is? Superlative site demystifying all computer jargon

Web trading advice and tools

Anybrowser.ComHandy HTML and site analysis tools, with links to other useful goodies
Link Scan and Quickcheck Check if your links are okay
Mark Horell Impressive web tools site
Site Inspector Expert site about site design and optimisation
Spin Wave Crunching large graphics files (slow loading) into smaller ones (load faster)
Web Hosting Talk Free-for-all discussion about hosting options - good, bad and ugly
WebSource net Website design and development guide with plenty to offer

Straight thinking and general myth combat

AFU Urban legends Excellent archive, good for cross-checking with Snopes
Anthropic Principle Stunningly detailed explanation of this important principle
ASKE Association for Skeptical Enquiry, an informative UK-centric site
Atheism Web: Logic & Fallacies Clear, elegant exposition of what logic is and is not
Bad Astronomy Astronomer Philip Plait's inspired and fun debunking of media errors
Crank Net Delightful reference site devoted to cranks and their views
Crimes of persuasion Anatomy of con artistry
FactNet Cults and Mind Control
Fallacies Elegant dissection of bad arguments and poor reasoning
House of Con Games Informative and entertaining, apart from the irritating music
Infomercial Scams Your guide to over-hyped, over-priced junk that doesn't work
James Randi Educational Foundation Info and commentary on current pseudo-science
Jim Lippard's Skeptical Information Links It is hard to imagine how this could be any better
Martin Gardner index All he wrote, and where he wrote it
Pink Unicorn A brilliant site satirising what the religion-infected sound like to the rest of us
Ross Institute Information on cults and suchlike
Skeptic Magazine Great site, and home of a fine magazines you can (and should) buy
Skeptic's annotated bible Interesting points about every book in the bible
Skeptic's dictionary What it says
Skeptic planet Vast, comprehensive resource with a million links
Snopes Urban Legend archive Brilliant, well-written and authoritative
Truth or Fiction A good companion to the Snopes archive with a slightly different remit

PSI research and related

APRU, Goldsmiths College The Anomalistic Psychology Research Unit. Beware naff 'Flash' opening. Lotsa links

Magic magazines, chat and info

All Magic Info on the magic scene - by the ton
Little Egypt Truly delightful web-only magic mag from the wonderful mind of Steve Bryant
Magic Largest selling magic periodical in the world
Magic Cafe The best magicians' discussion forum, well-moderated with good policies
Magic Times Good daily online magic mag
Magic Week Brilliant weekly online magic news
Mentalism UK Greg Williams's site of mentalism news, views, tricks and chat
TalkAboutMagic Chatty, lively, well-presented online mag with good essays
The Linking Page Nice site 'where magic and the internet come together'
Visions High quality online magic journal

Playing cards and related

Bob Lancaster Gallery of Unusual Playing Cards Fascinating non-trading site, good links
Card Collection Comprehensive and truly excellent cards-by-mail-order service
Card Shooting Labour-of-love site devoted to this strange and challenging art
InterCol For rare, unusual, historic or collectors' packs of cards
International Playing Card Society Neat source of information on anything to do with cards
Peter Wood's Hugobia A staggering gallery of original art decks by one very talented artist
Piatnik Sellers of over 25 MILLION packs of cards a year
The Card Games website John McLeod's superb compilation of games and their rules
United States Playing Card Company The biggest there is
U.S. Games Systems Inc. Makers of the Medieval Scapini tarot deck (which I use)
World of Playing Cards A very decorative site rich in information and galleries

Magic traders and related sites (tell them you found them via this website)

Arjan's showbiz centre huge stock incl. Kryolan, the best fake blood you can buy
Black Hart Productions Go > Friends > Black Artefacts. Good props and routines for sale
Bradbury Books & Beyond Good people trading in 2nd hand magi books
Card Trick Central Lots and lots and lots and lots and lots of card tricks
Daytona Magic Nice, searchable site from some of the friendliest guys in magic
Download magic Steve Fearson's brilliant use of the web
H & R Magic Books Magi books from Hatch and Randall, two of the nicest dealers in magic
Hermetic Press Home of some of the finest magic books ever pubished
International Magic Great London magic house well run by the very helpful Martin MacMillan
James Rainho Simplex Magic Good stock, original items, nice friendly 'feel' to the site
John's Rare Original Magic Autographs Probably a unique website of treasures
Keith Bennett One of the UK's most respected magic dealers, very nice and helpful guy
Kenton Knepper Some outstanding materials on cold reading and related themes
L&L Publishing Well-regarded house of books, vids, tricks and most anything in magic.
Lee Earle Highly-respected star of mentalism, with some wonderful items for sale
Magic Books by Post Marvellous UK source for magi books, with very fast service
The Magic Castle Los Angeles home of magic
Magic Posters Buy, sell, trade magic posters
MagicTricks.Com: The Magician's Magic Shop 100s of effects, books, videos and posters
MagicWorld Vast UK site (but trading worldwide) with terrific stock range
Mark Strivings Great stuff for mentalists. No website, but use this email link to get catalogue
Martin Breese One of my favourite people in magic, with some terrific items for sale
Meir Yedid Magic Well-presented site of cutting-edge magic, especially the video range
Michael Ammar The finest magic video teacher in the business, and a nice guy as well
Michael Cannick Rare, new and used books, and search service
Michael Daniels Impressive example of a website that does magic tricks
Misdirections Magic Shop Snazzy site, nice people.

Magicians (tell them you found them via this website)

Derren Brown The best mind-control exponent in the UK
Drew McAdam Scotland's finest mentalist (aka 'Drew McGeller')
Jeff McBride What a magician's website ought to look like
Magicians for hire Excellent UK directory from 'Magic Week'
Mark Farrar Diverse and interesting site, and the last word on magic squares
Martin Taylor The best hypnotist and magician in the UK
Michael Vincent The best sleight-of-hand artist in the UK, skill and charm personified
Nick Einhorn The best close-up entertainment magician in the UK
Rory Raven Rhode Island's finest mind-reader, ghost expert and all-round interesting guy

Puzzles, toys, optical illusions

Colloquium of Visual Illusion English section of a brilliant Japanese site
Color Cube A richly enjoyable site, and the 'Illusions' section is well worth a visit
Edward Adelson Home of the Adelson 'Checker Shadow' illusion, my all-time favourite
Grand illusions Optical illusions, scientific toys and magic you won't find anywhere else
Michael Bach Visual Phenomena Excellent site about visual weirdnesses
Planet Perplex Huge, well-classified collection of various bewildering opticals
Potty Puzzles Good UK source of various kinds of physical puzzles, and a nice website too
Puzzle World Very interesting, including sources for impossible objects and puzzle boxes
Sandlot Optical illusions and visual oddities. Superb site
Visual Cognition Lab Brilliant videos of actual cognition tests used in research - wonderful!
Visual Illusions Expert commentary on the principles behind visual illusions

Music

All Music Guide Online encyclopedia of contemporary music. Comprehensive, brilliant
Classical Music Archives Good but non-free, i.e. owners don't understand the web. Shame.

Movies and Special Effects

Ain't It Cool News News, gossip, rants and raves about the movie scene
Digital Domain A major player in the SFX industry
Drew's Script-o-Rama Movie scripts
Insultingly Stupid Movie Physics Enjoyably ranting site about what it says it's about
Internet Movie Database Incomparable and authoritative, this is why the web was invented
Movie Cliches list Hysterical and deadly accurate
Movie Mistakes Flaws and flubs in movies, by people with too much spare time
Movie Scripts What it says
Movie Spoiler Spoiling contemporary and recent movies
Nitpickers See 'Movie Mistakes' above? Same again
Rotten Tomatoes Ad-saturated but otherwise good site harvesting movie reviews
Voicehunter The gravel-voiced guy who does all the movie trailers, and all the others

Word Play

Anagram EngineThe site's menu provides a very good anagram engine
Chiasmus Dot Com Very good if you love words doing acrobatic tricks
Internet anagram server Exactly what it says on the tin
Mike Keith Advanced word and number play 
PseudoDictionary The dictionary where all the words are made up!
Richard Lederer's Verbivore The master of 'anguished English', wordplay and word madness
Take Our Word For It Delightful exploration of word origins
World Wide Words Excellent recreational wordplay
Word Oddities and Trivia Vast, exhaustive lists of word-related trivia
Word Origins Etymology facts and fun
Wordplay A site devoted to the art of screenwriting
Word Play Another brilliant rec. words site

Fun and leisure

This page is easily the funniest thing on the web. Beautifully-written and funny
Advertising Graveyard Ads that never made it, and it's not hard to see why
Attrition Anti-hacking site, but a wealth of fun stuff and the best gallery on the web
b3ta.com Quriky site packed with fun ideas and healthy madness
Baby's Named A Bad Thing Unbelievable compilation of awful names bestowed on babies
Be A Genius How to have a brain the size of a planet
Bizarre Bath The best thing a tourist can do and enjoy in the UK
Bored.com Worth a visit if you are
Brains Trust Highly imaginative, the finest and best-written source of online satire
Cartoon Gallery Very good site about cartoons and cartoonists
Cockeyed.com The pranks and science club episodes are unmissable good fun
Cruel Site Of The Day Read the 'About' page to get the gist, then enjoy the finds
Dave Barry 'Miami Herald' columns from one very funny columnist
Deb & Jen's Land O' Useless Facts Satisfyingly vast pile of useless factual trivia
Despair, Inc. A delicious, joyful antidote to every 'motivational poster' ever printed
Everything Isn't Under Control Sharp wit and topical insight with a jagged edge
EvolveFish Wit, scepticism and attitude and source of 'Born OK the first time' T-shirts
Generation Terrorists A quotable quotes page, but better than most
How To Be Annoying Nothing more nor less than a list of ways to be annoying
Institute of Official Cheer A delightul harvest of amusing material, including retro 'kitsch'
Internal Memos Corporate internal communications held up for scrutiny and laughs
Irony Central - About the baby Very funny journal of fatherhood
Japanese Engrish Funny without being xenophobic
Jesus Christ Superstore Hilarious, and very neatly done
KissThisGuy Delightful site of mis-heard song lyrics, spoiled by creaky frames 'layout'
Lileks.com One of the funniest sites on the web with countless delights in every section
Linky & Dinky Trawl through weird + whacky websites. Funny, with more hits than misses
Marketing Mistakes A grand compilation of classic 'marketing mistakes' funnies
Maths Miscellany and Puzzles Superbly enjoyable site, deep and broad and fun
Meme pool Offbeat, witty and mildly intellectual diversions
Museum of Bad Art Exactly what it says, and well worth a visit
National Lampoon Best part being the True Facts dept., a great gallery of funny files
Need To Know Cerebral IT-related wit and observation, stimulating and dependably sane
Norbert's Emulators Java versions of classic arcade games
Obscure Store & Reading Room News (sort of) you won't find anywhere else
The Onion Popular online satire, somewhat over-rated but intermittently great
Origami Underground 'Adult' origami! You won't believe it until you see it, and even then...
Orisinal Very impressive set of delightful Java games, many of them highly addictive
Patently Absurd Weird patents, truly bizarre and strangely compulsive
Punch magazine Famed for cartoon wit, axed in paper form but resurrected on the web
Riddles Compelling collection of the riddles that get used at job aptitude interviews
Rink Works Some funny stuff
Rotten.com Archive of all that is vile, distasteful and depraved. Not for the faint-hearted
Show and Tell Music Hilarious collection of music albums that should never have been made
Sod Work Lots of jokes, funnies, games and other things more fun than working
Something Awful Fun stuff and cool, witty contemporary commentary
Spinne Web Worth getting to know (which takes time) with some good toys and games
Stick Figure Death Theatre What animated GIFs were invented for
Straight Dope The Message Boards can be great fun
Thinks Dot Com 'Fun & Games for Playful Brains' and wonderful beyond words
TV Go Home UK-centric, deadly-accurate satire aimed at TV schedules
Ugly Footballers All about football players who are ugly - what else?
Uncool Central Found through 'Linky & Dinky'. Rich collection of madness and badness
Useless knowledge If you like trivia, you'll love this
The Weekly Not as good as 'The Brains Trust' and 'The Onion' but some fun moments
Worth 1000 Dangeously addictive feast of stunning fake photo creativity, brilliantly run site

Miscellaneous sites I like

Act For Tibet Isabel Losada's excellent site about an excellent cause
Albemarle London's theatreland info and tickets. A brilliant site
AMFPA Mouth and foot painting artists. I find this website very inspiring
Anomalies Unlimited Beware 'Flash' intro, otherwise unmissably good fun
Aurora Borealis photography Amazing phenomenon, great site about photographing it
Book Crossing A stunningly good idea. Go, enjoy, participate
Butterfly Alphabet Alphabet from the patterns on butterfly wings. Just beautiful!
Campaign for Digital Rights An important site about an important issue
Caspian Great acronym for a cause which is either very worthy or paranoid, I'm not sure
Circlemakers Multi award-winning, breathtakingly beautiful website on crop circles
Cockeyed Delightfully nutty practical experiments - how much ink is inside a pen? etc.
Colony Music Web home of a truly terrific New York sheet music store
The Crime Library Well-organised site about real-life crime and forensics
Curious Characters A wealth of great gift ideas, including the brilliant 'Ego Boosters'
Dave Central Software a go-go
Easter Egg archive Go to the site to see what an 'egg' is, and I think you'll like it
Exit Mundi Every way the world could end. Truly addictive and delightful
404 Research Lab Devoted to the most frequently seen page on the web
50 States More-interesting-than-it-sounds facts fest about every state in America
Gallery of "Misused" Quotation Marks Exactly as its "name" suggests
Guinness World Records Fascinating content, absurdly flashy presentation
Half Bakery Quirky site on which people discuss half-baked ideas / inventions
Help Others The web home of the pay-it-forward game. Check it out!
Imaging the Imagined Computer imaging primer. Brainy content, hideous presentation
I Want One Of Those A fun commercial site featuring irresistible gadgets and gizmos
Junkbusters Dreaming the impossible dream - getting rid of junk mail in all its forms
Loompanics 'The Best Book Catalog in the world' they say, and they could be right
Medieval Woodcuts Clip Art You never know when you''ll need some
Mommarama Parenting humour by the wonderful Susan Kawa. Joyful!
Museum of Hoaxes Sites about hoaxes, and sites that are hoaxes
Norman Bryn make-up artist Fascinating gallery of work, some of it jaw-dropping
Patent Office The US Patent site, limitless hours of enjoyably pointless browsing
Red Letter Days You want memorable experiences? These people sell them!
Renaissance Women's Kitchen Special woman, great writer, great site
Screwed Central Complaints and injustices aired and shared
Screwed Company Dead/dying companies. Funny. Warning: I've softened the actual name
Sequential Tart A webzine about comics, by women. Sharp, creative, funny 
Shroud of Turin photos Great site by the man who has taken most photos of it
The Smoking Gun The documentary proof behind famous incidents
Teacher Source Educational Innovations. Lots of cool stuff: ferrofluids, sci-toys etc.
Todd Peach's artist lyrics Vast, admirable collection
Twilight Zone Episode Guide A great tribute to a great TV show
Violet Books specialists in supernatural, fantasy and mysterious literatures!
Weisstein's World of Mathematics Staggering range from applied to recreational
yForum Forum on people's differences

Search engines

Alta Vista
Alta Vista UK
Excite
Google
Google images
Lycos
Yahoo
Yahoo UK

Good research sources

Straight Dope Best ask-any-question forum
1728 Software Unique page of specialised calculators, web tools and reference sources
Abe books Online market for second-hand, rare and out-of-print books
All experts Lots of expertise on offer
Ars Technica Open msg board devoted to technical matters and gadgets
Ask Dr. Math Simply superb. Not many sites fulfill their aims as completely as this
Bartleby Reference Many great standard reference books online
Bible Gateway Searchable online Bible, various versions
The Board Reader Excellent search engine of 'Straight Dope' and other Q&A forums
Bookfinder For new, used and rare books
Brainy Quote Good sampling of smart words from smart people
Britannica The encyclopedia people
CIA World Factbook Everything about everywhere, more or less
Dates In History A perfect website: does one thing, and does it well
Every Hit Searchable index of UK pop charts
Every Rule The official rules for every game and sport in the universe (almost)
Everything2 Vast user-written encyclopedia with abundant links
FAQ Farm All the Frequently Asked Questions in the world
Fathom The forums are a good source of ask-any-question info
Free lawyer (UK law)
Getty Images Copyright image archive of everyone and everything under the sun
Guardian Notes & Queries Addictive newspaper column, queries asked and answered
How stuff works What it says
Info please All the knowledge you need, more or less
Jargon Dictionary Terrific lexicon of jargon, slang and odd figures of speech
Merriam-Webster Very good online dictionary
New Scientist Last Word Illuminating compendium of popular science Q & A
Quotes My favourite collection of quotes
Slyck Very informative site devoted to music file sharing
Street Map UK Streetmaps for the entire British mainland
Stumpers aka 'Wombat Reference Collection' - librarians chew 'unanswerable' questions
Symbols 2,500 searchable symbols and what they mean
Translate Google's version of the Babel Fish
Tube Guru Everything there is to know about the London Underground
Universal currency converter It's a currency converter and it's universal
Universal units converter Convert anything to anything!
VCD Help DVDs, Video CDs and suchlike... everything you will ever want to know
Virtual reference library What it says
Webshots Vast user-submitted photo library
Who 2 Historical figures and lots about them
Wikipedia Online encyclopedia, this links to specific entry on cold reading
Wisegeek Highly addictive, searchable den of concise articles spanning rich variety of topics
Wordsmyth Very good online dictionary

Notables

Monica Sepulveda A psychic I met in LA. The most hideous artwork on the web?
The Don Juan Centre Amazingly stupid. Proof that Male ego + Testosterone + Hope = dumb