DJ Earthworm's mash-up of the Top 25 hits of the year according to Billboard, called "United State of Pop 2009 (Blame it on the Pop)", can be seen in the replies.
I'm not sure how many of these he's done, but this is way better than last year's, I think.
agreed. i think he realized how many people saw last year's and worked harder this time around. i actually kind of enjoyed this, especially because of the video component.