http://www.xbox-scene.com/releases.php
for hacked down releases and which games can be hacked down.
Also, have you considered getting a bigger HDD in your Xbox? $90 for about 60-80gb Hard-drives. If you don't want to rip that games, or want to play the games that can't be ripped, I suggest this. I didn't install one, because I'm getting a dvd burner (which are all back ordered) and am eagerly waiting for it.