Check this guys album out if you haven't seen it before. I don't really like most of the songs in it (in their original form) but the 8bit versions are pretty good, especially as background music for vids and shit.

http://rakohus.bandcamp.com/album/the-sprite-album

Features 8bit of:

Radioactive
Ain't Nobody
Get Lucky
Hotel California
Feel Good Inc
Gangnam Style
Thrift Shop
Ni**as in Paris
Blurred Lines
Party Rock Anthem

8bit general?