What Tonight Show host voiced a character on the movie Igor in 2008?
Igor (film):  The film features the voices of John Cusack, Molly Shannon, Steve Buscemi, Sean Hayes, Jennifer Coolidge, Arsenio Hall, Eddie Izzard, Jay Leno, Christian Slater and John Cleese. Jay Leno:  After doing standup comedy for years, he became the host of NBC's "The Tonight Show with Jay Leno" from 1992 to 2009.
Jay Leno