Unlike most hosts, Hart is proving to be complicated.
For starters, the 32-year-old comedian-actor doesn't like making eye contact. When he writes his jokes, he has to do it in a "think tank" -- alone, in his home.
He also has to stand on top of an apple box when performing. Sometimes, he has to stand on two of them.
That's why collaborating with the "SNL" cast and crew feels like a new process for Hart, who is hosting the NBC show Saturday.
"I am what you would a call a genius," said Hart, as the "SNL" cast and crew burst into laughter.
"A lot of people came in the room and were looking into my eyes and it threw me off a little bit," he says jokingly, but in a serious tone. "So I just closed my eyes and let them talk and kind of took it all in. And then I recited everything they said."
Hart was in good spirits and self-deprecating -- as usual -- as he shot "SNL" promos on Tuesday.
His hosting gig on "SNL" is another notch on his growing resume: He hosted last year's MTV Video Music Awards, has appeared on ABC's "Modern Family" and starred in the romantic comedy "Think Like a Man."
He's also the star of the BET parody series "Real Husbands of Hollywood" (Tuesday, 10 p.m.) with Robin Thicke and Nick Cannon. The Philadelphia-born Hart said he's "anxious," but not worried, about hosting "SNL."
"You can't get nervous about what you love to do. This is what I love to do, so the opportunity to do it on this stage is ridiculous," he said.
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