Ke$ha turned New York's Roseland Ballroom into one giant, hot, glittery party last night. Fans got sleazy right along with the beard-loving Cannibal as rocked the crowd with "We R Who We R", "Your Love Is My Drug" and, of course, "TiK ToK". K-dollah's encore was a bit unorthodox. One of her crew members (dressed as Santa Claus) performed the Beastie Boys' "(You Gotta) Fight For Your Right (To Party!)" while the pop star danced in a Barack Obama mask. Why? Because she's Ke$ha and she can do as she pleases, which is exactly why we love her.