For almost 20 years, The Tonight Show with Jay Leno and The Late Show with David Letterman have been battling one another for late night ratings. You may already know that Jay and Dave don’t really like each other, but a quick look into the history of the Leno/Letterman rivalry illustrates exactly why these two titans of late night despise one another. It also provides a little insight into Jay’s habitual penchant for being a huge asshole to his fellow late night variety program hosts.


Via: Famous Rivalries