Jimmy Fallon is known for his impressions of celebrities, from Adam Sandler and Jerry Seinfeld to Alanis Morissette and Dave Matthews. But there's one voice that eludes him.
"I can't do Woody Allen to this day. I worked with him, and I can't even do him," Fallon said in a recent interview. "I just sound like John Travolta when he was really young."
The 27-year-old "Saturday Night Live" comedian joked that he knows he has an impression down perfectly "when you don't have to tell people who it is." He thinks his best one is of Robin Williams.
"I just like that one because it's, like, so many different things," Fallon said. "Robin Williams is amazing. He does, like, 20 people. There is no real Robin Williams. He does the gay choreographer, he's like, a preacher, and he's a hick from upstate New York, in five minutes."
Fallon's debut comedy album "The Bathroom Wall," which contains many of his impressions, hit stores Tuesday. He's also hosting the MTV Video Music Awards Thursday night.