http://www.cinemassacre.com/new/ is his main site, it's a bit shitty to navigate though.

http://en.wikipedia.org/wiki/The_Angry_Video_Game_Nerd

Check his Youtube account for the game reviews.
http://www.youtube.com/user/JamesNintendoNerd

Been watching this for a bit as well, laughing my ass off watching this guy replay old Nintendo games and raving, heh. I remember how hard Battletoads was, or TNMT 1. Any of you that don't, go snag a emulator, a controller, and get ready to scream.

 

Better link to reviews
http://www.gametrailers.com/screwattack.php

 

Ah, yes, AVGN. His stuff is incredibly over the top and cheesy, but that's exactly why I like it. He takes his character's name and makes it his own.

I just wish he'd update more often, or at least update semi-consistently.