Passion for Puzzles [ http://www.passionforpuzzles.com/ ]
Offers online logic puzzle games, puzzle collection, puzzle solutions and much more.

PuzzleDepot.com [ http://www.puzzledepot.com/ ]
Devoted to puzzles, board games, trivia contests, shockwave games, puzzle books and software. Test your brain on crosswords, riddles, word puzzles, logic games, strategy and board games, a large selection of shareware links, and shockwave arcade games with lots of action.