In the 1970s and 80s he appeared mostly in night clubs and show rooms across the country, including Las Vegas, opening for headliners like Paul Anka, Nat King Cole, Sammy Davis Jr., Lena Horne, Dean Martin, Liza Minnelli and Jerry Vale.
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He also was a regular guest host of The Tonight Show with Johnny Carson, and was one of 'The Comics' in the Carnegie Deli of Woody Allen's 1984 movie, Broadway Danny Rose.
Corbett Monica, a comedian featured in some of the comedic scenes of Broadway Danny Rose filmed at the restaurant, lamented that "It's not the same kind of warm haimish feeling since Leo passed away".
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