I'm working on a breaks track at the moment and last night I decided to have some fun with Ableton Live 8's audio warping. I took the vocal acapella to Jurassic 5's 'What's Golden' (http://www.youtube.com/watch?v=XsZKrctSDaw ) which is 96bpm, and warped it around using transient markers to make it fit my track, which is 140bpm. I've completely murdered the original rap, and the vocals fall to pieces slightly in places, but it was fun...hahaha.
Anyway, the full track is available for free preview and download at Soundcloud: