Here you'll find a few random links to some other great and handy useful resources. Let me know if you have any other interesting links to add.

Adrian's Rojak Pot - The Definitive BIOS Optimization Guide
This guide serves as a repository of knowledge on various BIOS options.
DAE Drive Features Database
Provides people with an informative collection of DAE (Digital Audio Extraction) drive features.
Your source for video codec and pixel format information.
MusicBrainz is a community music metadatabase that attempts to create a comprehensive music information site.
The free encyclopedia that anyone can edit.