Chronoshock - A messageboard for all thing's Chrono
Digit Press - Video game database with lots of files like manuals, posters, etc.
Fantasy Anime - Very cool shrines to various games
Flying Omelette - Interesting game reviews, glitches, and more!
Game Boy World - Super in-depth videos on game boy games.
Game Music Appreciation - Play tons of game music for free in your browser
How Long To Beat - Get a sense of how long it will take to beat a game
RPG Classics - A huge website with tons of info about RPGs for many consoles
The Seikens - All about the Seiken Densetsu series of games
Scroll Bros - Lots of info about beat-em-ups