Outside of his academic pursuits, Levitin has worked on and off as a stand-up comedian and joke writer, performing at the Democratic National Convention in San Francisco with Robin Williams in 1984, and at comedy clubs in California; he placed second in the National Lampoon stand-up comedy competition regionals in San Francisco in 1989, and has contributed jokes to Jay Leno, Arsenio Hall, as well as the nationally syndicated comic strip Bizarro, some of which were included in the 2006 compilation "Bizarro and Other Strange Manifestations of the Art of Dan Piraro" (Andrews McMeel).