Mashup expert DJ Earworm has posted his annual "United State of Pop" video that mashes the 25 biggest hits of the last year into one five-minute video and song. Mr. Earworm (a.k.a. Jordan Roseman) has been putting these tracks together since 2007, creating a snapshot of the year in popular music and also maybe giving you something you can dance to on New Year's Eve.

This year's track — title "World Go Boom" — is (predictably) dominated by Katy Perry, Adele, and Rhianna, although club staples like Pink, Lady Gaga, and LMFAO make their way in as well. Most of the tracks are dance hits, giving you a pretty good idea of what sells and what doesn't in 2011. 

You can watch the video below and even download an mp3 of the track at his website.