Clifford Pickover's engaging and unusual mind & consciousness site.
Free massive forum on all things related to Myers-Briggs, including cognitive functions, Kiersey temperaments, and much more. An incredible range of topics and viewer discussions.
Wild Mood Swings
Pick your mood, click the button and Wild Mood Swings will open an appropriate website in a new window.
Find various puzzles and contests: mechanical puzzles, 2D puzzles, 3D puzzles, logic games and anagram puzzles, some of them used in TV Game-Shows, SMS contests or online contests.
100's of Brain Teasers, Riddles, Jokes, Cartoons & Groaners/Puns.
Write My Paper Hub
"Need someone to write a good academic paper for you? This essay writing service will help you."
From the Web site: "Every day we will post a new puzzle with a different theme - Nature, Places, Animals, Scenery and more!"
"The most comprehensive list of practice psychometric tests & questionnaires available on the web. Essential preparation for graduates, job hunters and those revising for university entrance tests."
The Fortean Times
Online version of this unusual print magazine.
A huge list of sites for when you're feeling bored. New sites are added every day and are rated by the user.
Anime and Pokémon downloads.
"The world's best resource for puzzling on the Internet is about Puzzles, Illusions, Tricks, Toys, and everything around all these Great, Funny, Entertaining, Intellectual and Educational Things."
The Contest Center - Puzzles & Prizes
Online card and magic tricks that will amaze you.
Fundrum My Conundrum
From the Site Description: "Remove all assumptions and try some of these puzzles and riddles. Our family collected our 100 favorite brainteasers of various types into this great book. Enjoy."
Braintenance: Mind Builders
Insightful, entertaining blog of Douglas Castle on mind-exercisers: illusions, problems, and puzzle links. Also featured are paradoxes, intelligent widgets, and interesting musings. Updated regularly.
For writers, artists, and creativity enthusiasts.
Mind Bluff's sister site: all about embodied cognition, the latest super-star of neuroscience.