My favorite game related site is
ScrewAttack.com. It's more of a humor site but Stuttering Craig makes some excellent recommendations for older, less popular games and the sites news coverage is always entertaining to watch.
The Game Heroes is also pretty cool, it's current layout sucks ass but that's because it's still in it's primitive beta stage, it was started by former SA member Handsome Tom and it shows a lot of promise.
Anyway. These are also some great independent retrogaming sites.
Racketboy.com
This site has a lot of great info concerning all the older video game consoles, with tons of great game recommendations to boot.
Sega-16.com
By far the best Sega Genesis fansite I have come across so far. With reviews for just about every game to ever come out on the console.
Hardcore Gaming 101
Tons of info on the most obscure and unusual games worth checking out.