Bootie.

I like mashups because they are cool. One blog on my run read list is Bootie Blog. They usually have their monthly 10 tep mashups and then at the end of the year, they release their best of. Like the best of 2008. I posted this on my private blog before but, Sad But Superstitious is pretty much the best mashup I've ever heard. I can't seem to listen to it enough times. Good stuff.