These videos aren't new, but I saw them for the first time recently. This guy takes songs (usually songs he hates) and rewrites the lyrics to what they sound like, pairing them up with fitting imagery. It's one of the funniest things I've ever seen.
He has several more on his YouTube profile, but I just picked my two favorite…
For a band and song that suck:
(Trivium does suck. Opeth, on the other hand, kicks ass.)
For a band and song that kick ass: