The Simpsons have done over 500 episodes and they just came out with an awesome couch gag for another icon.

The Simpsons have been around as long as I have been alive, but as it turns out Late Night with David Letterman has been around longer. It started in 1982, but for some reason I thought it started in the 90's. Well David Letterman announced he will be retiring in 2015.

Of all the late night hosts around, I am probably the biggest fan of Conan. Jimmy Kimmel is starting to come in as a close second though. I never watched Late Night with David Letterman religiously, but you have got to give the guy some credit for being on television for over thirty years.

Check Out the Simpsons Couch Gag Below: