Among last night’s American Idol Gives Back performances by Fergie, Snoop Dogg, John Legend and others was Robin Williams, who came onto the stage in character as a Russian Idol named Ivan Yakinov. Mr. Williams, or rather Mr. Yakinov, wore a shirt that he got at an "Elton John garage sale," sang Putin’s favorite song, and talked about Russian reality-television series like "So You Think You Can Drink." Watch the video to see him grab Simon’s ass in "a brokeback way" and more.

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