An Emotional Jimmy Fallon Tributes, Channels the 'Genius' Robin Williams

On Tuesday night’s Tonight Show, a verklempt Jimmy Fallon paid tribute to Robin Williams, the “unbelievable” comic genius who earlier this week died of suicide.

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Fallon, his voice repeatedly catching, starts off by hailing Williams’ caliber of comedy, at one point briefly illustrating it with his own impression. He then tees up a classic clip of Williams’ very first Tonight Show visit, opposite Johnny Carson, in which the whirlwind of wit kept the camera men on their toes.

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Because of taping schedules, Conan O’Brien was the first late-night host to mark Williams’ tragic passing, solemnly relaying the news, as it broke, to his studio audience on Monday afternoon.