Black Eyed Peas
Being completely objective although I may have to go back and watch some of these because I forgot some of them.
Katy had all high's and barely any low moments during her performance, consistently good, and that surprise guest!
Gaga slayed vocally but I wish some of the performances were stronger or had more of a twist.
Beyonce started off strong, but i got so bored when destiny's child came out, it seemed just like her concerts.
Madonna has such a strong en