The Grammys are taking over the Staples Center in LA tonight and there's an impressive list of artists expected to wow the crowd. Lady Gaga, who just released the first single off her next album, always puts on a solid performance and the evening's most nominated artist, Eminem's energy will pump up the crowd. Katy Perry will probably wow us with another wild ensemble while Usher and Justin Bieber may break out a hot new dance routine. Newcomer to the Grammy stage, Gwyneth Paltrow, is sharing the spotlight with Cee Lo to sing "F**k You." So, tell us — which performance are you most excited for?