Roxette's The Look vs. Primal Scream's Loaded, with a little Pour Some Sugar On Me for a little flair. Workin' on that.
Also, splitting a track in Audacity and reversing one of them is a lot of fun. Get's a lot of cool shit.
For example:
http://www.megaupload.com/?d=5GLXIQIP
That's by NO means a finished product. I just like to listen to it. Gives me ideas.