If there is an official "unofficial" band for Totally Covered and Wicked Guilty Pleasures, I would have to think it would be Me First and the Gimme Gimmes. How could they not be? They are a punk rock supergroup who over the course of nine records have covered guilty pleasures of the 70s and 80s, as well as Motown, country and Broadway hits. Here's a Loggins and Messina cover from their first full-length record Have A Ball.
OK, one more. While this is not an official video, it's too good to not show. Someone took the original Dixie Chicks video and did a little editing to make it work with the obviously sped up Me First version of the song.