If you're into mashups have a look for the Cut Up Boys. They used to do a half hour set on Radio 1 on Thursday nights. I never thought you could play Dr. Dre and the Spice Girls together but it turns out you can. They released a compilation on Ministry of Sound but all their best stuff was usually live so you had to record off air. I've got a dozen or so recordings from their stuff on Radio 1 and also a lo-fi copy of some sessions they did for Studio Brussel.
Trippy stuff! A little more digging found this article as well, which is believe I first read a couple years ago. Brilliant stuff. You got me hunting around, online, for other good mashes.
Here's a good page, although not as brilliant as the Revolved album.
I've got the album 'A Recipe for Disaster', it's really good. Mr. Quickie Cuts the Cheese is my favorite. Just been looking at the CD and I can't believe it's nearly 10 years old, I suddenly feel rather ancient.
You have no right to feel ancient until you hear your favorite song converted to a Muzak format and broadcast over your supermarket's audio system. Bonus points for being annoyed when they cut into it to announce a need for cleanup on aisle ten...