Today is for the ladies. There are too many great girl groups right now (particularly from the U.K. and Korea!) to not pay attention to them. We went on a girl group binge and made a little playlist featuring doo-wopish groups from the sixties to 2NE1's amped up dance beat "I Am the Best". There are a few temporary girl groups we couldn't help but feature (hello, Nicki, Ariana, and Jessie J). Call your girlfriends, y'all.