Britney Spears Leaving 'X Factor'
One Direction Surprise Fans With Impromtu London Appearance, Get Covered For OlympiansEverything's coming up 1D. The guys play a surprise performance in London, get parodied in tribute to the US women's gymnastics team and get a surprisingly beautiful piano treatment.
Nicki Minaj Joins Taylor Swift At L.A. Concert For "Super Bass"
Lil Wayne Talks Surprises For Fans In 'Tha Carter IV'