Gallery: A Week Of Wild Performances

Gaga performed all over New York this week.

She even made it rain on herself.

And there was smoke.

The old school rocker performed shirtless in Monaco.

The American Idol finalist got passionate on stage in NYC.

The fellow A.I.er also gave a spirited performance.

Kylie brought a large bear onstage, just 'cuz.

She also had a lot of balloons.

For the youngs, Chubby is the man who famously popularized "The Twist." He performed this week in honor of the 50th anniversary of the dance. We approve of the Canadian tuxedo (denim on denim)!

Usher performed in Beijing. He busted some sick dance moves, as per usual.