My pal Simon Flavelle, a DJ, just made a whole album of Super Meat Boy mashups and I just haaaad to share it. It has SMB tracks mashed up with tracks from artists like Pendulum, Justice, and Daft Punk, as well as with other games like Half-Life 2, Cave Story, and Sonic 2 (Chemical Plant vs Dark World 1 is a real treat). Of course that's not everything but you should just go ahead and take a listen anyway. It's some seriously neat (meat?) stuff!