Watch a First Look at “David Letterman: A Life on Television”

Tonight, CBS will be doing a tribute special right before The Late Show.

David Letterman: A Life on Television” will cover the entire career of a late night and comedy icon over the course of 90 minutes. 

Variety got this preview of the special and you can that Dave has virtually seen it all.

Catch the special tonight at 9:30PM on CBS before Letterman chats with President Obama and Will Ferrell.