Adult Swim music

So the music they play for show intros on Cartoon Network’s Adult Swim block – is it new music for the show or sampled from something else? Anybody recognize it? Something sampled, maybe? Know the original source?

And while I’m at it, what about the music Aquaman uses when he’s shaking his groove thing in random locations?

Is the booty-shakin’ Aquaman anywhere on the 'net? It would make a cool avatar.

I’ve heard that music used for other commercials recently, so that would rule out in-house production.