CLEAR - the Campaign to Leave Emulation Alone (plus an R) - CLEAR is a pressure group of emulation fans formed to save the emulation scene from the misconceived, sledgehammer tactics of IDSA.Emugames: The EMU Hive - A comprehensive database of emulators and roms for download as well as a large history section for nostalgia.
EmuUnlim - News plus lots of community features, like polls, and an extensive download area.
Emula3 - Contains emulators for many different computers and calculators/PDAs for many different platforms. [English/Italian]
Zophar's Domain - An excellent site with recent emulation news, as well as emulators, translations.
Mike's Notebook - Links and information about various types of emulation.
Elephanstew Emulator Section - Introduction to emulation and tutorials for emulators.