The Video Game Critic

http://www.atarihq.com/mainsite/

This used to be a good Atari site, but it's kinda been running on fumes for the past decade. They still hosted a lot of fun content, including TSR's Nes Archive. That's still up, (http://www.atarihq.com/tsr/) but I don't know how long it'll last.

Went to Archive.org. Copied AtariHQ's main menu into a word document. Using that to get the URLs to their hosted sites, which should still be online.

http:/www.ataribook.com/ - An up-to-date book on Atari History
http:/www.atarihq.com/pal-division/ "The Ancient Atari PAL Division" European 2600?
http:/www.atarihq.com/danb/ Technical information on old computer, arcade, and game systems.
http:/www.atarihq.com/jeo/ Jaguar Info
http:/www.atarihq.com/rgvc/ "the official IRC (Internet Relay Chat) channel of the rec.games.video.classic newsgroup"
http:/www.atarihq.com/vectrex/ Spike's Vectrex Page
http:/www.atarihq.com/tsr/ TSR's NES Archive

I know I've missed a few; using Google's "site:" operator may bring up some of the pages I missed.