Jeff Dunham
Jeffrey Dunham (born April 18, 1962) is an American ventriloquist and comedian who has also appeared on numerous television shows, including "Late Show with David Letterman", "Comedy Central Presents", "The Tonight Show" and "Sonny With a Chance". He has six specials that run on Comedy Central: "", "", "Jeff Dunham's Very Special Christmas Special", "", "", and "". Dunham also starred in "The Jeff Dunham Show", a series on the network in 2009.
Jeffrey Ullman
Jeffrey David "Jeff" Ullman (born November 22, 1942) is an American computer scientist and professor at Stanford University. His textbooks on compilers (various editions are popularly known as the Dragon Book), theory of computation (also known as the Cinderella book), data structures, and databases are regarded as standards in their fields.