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Whether you believe it or not, celebrities get bored. The glamorous life is not without the mundane, and it doesn't get much more repetitive than when a movie star or musician goes on a press tour — the same questions, the same stock answers, the same hotel rooms, and on and on. It's completely understandable that they'd want to mix things up a bit by jumping in front of a green screen to talk cold fronts and jet streams.

It happens more often than you'd think, and while some stars make it look easy, and most make it look awkward, all of them will make you laugh.