That bad plus stuff is weird, too many dischords for me i'm afraid and i'm usually a fan of them.
I've heard the seether cover before thought it was pretty good.
Personally i think this has got to be one of the all time greats:
Here's one i liked, partly because i hate Kelly Clarkson so much (even if DG did all her music for her!)
also here's one i did, if you've ever heard of a program we have in the UK called "ready, steady, cook!"?
It's on my mp3s somewhere.