After 33 years, David Letterman said goodbye with the final episode of The Late Show on Wed. May 20th .
Prior to David Letterman, The Tonight Show starring Johnny Carson was pretty much the only game in town.
Letterman was a pioneer when it came to redefining what a late night talk show could be. Today a bevy of late night talk shows fill the bewitching hours, capitalizing on what David did first and owing a great debt to this odd-but-endearing man.