Amazing Mash-ups

If you're reading this blog, you're invited to a party that Nina, Jacob, and I are throwing this Saturday, 1/3/2009, at Nina and Jacob's apartment. In preparation for this event (you'll see why if you come!), I've been looking into mash-ups of "Four Minutes" by Madonna/JT and Britney Spears ditties. I found two remarkable ones worth sharing:

(Warning: Kind of NSFW image...)