Just for Fun!

http://www.coolpuzzles.com
Math puzzles, lateral thinking puzzles, brain teasers, word puzzles, and more.

http://www.quizland.com/cotd.htm
Interactive crossword puzzles

http://thinks.com/
Recreations for active minds

http://www.e-fun.nu/mindbreakers/files.htm
Puzzles and riddles that test your logic.

http://www.btinternet.com/~puzzles/anapuz.htm
Puzzles and word play

http://kith.org/logos/things/sitpuz/
Situational puzzles