Funny Guy, Vol. 13: Leno And Letterman

Jay Leno and David Letterman have been rivals for years, but that doesn't take away from the humor that comes out of their late-night shows.Leno took over the "Tonight Show" for Johnny Carson and remains a favorite with the older crowd, especially with his sketches like "Jaywalking."He lost some street cred with a lot of people over the whole debacle involving taking his show back from Conan O'Brien, but thus far he's managed to hold on. Letterman's show has always occupied the same time slot as Leno's "Tonight Show," making them rivals for the coveted 18-49 year old market. But with all their rivalry and drama aside, both men are funny in their own ways and have millions of fans to prove it. Read about these comedians and their shows in this edition of "Funny Guy."