How catchy is “S.O.S.” by the Jonas Brothers? They sing it at every performance, but it’s a proven hit. The Jonas Brothers perform “S.O.S” at Dick Clark’s New Year’s Rockin’ Eve in this video.

I can’t help but think Mariah Carey is showing Britney Spears how to rock a bikini in a performance — the right way. Check out this video of Mariah Carey singing “Shake It Off” at Fox’s New Year’s Eve Live.