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

Videogame Music Preservation Foundation