Montage of Letterman Guests Over The Years [VIDEO]

As we eye May 20th, David Letterman's last Late Show, the tributes and final visit and clip montages are coming fast and furious. Check out just some of these guests from over the years.

If you missed it last night, (many did cause it wasn't promoted very well), there was a great episode looking back on Letterman's show filled with clips, guests and all kinds of fun stuff. You never really realize until you watch a clip like this all the history and forgotten scandals and on-air clashes that Letterman entertained over the course of his run. I was hoping for some more of the older stuff, but this is pretty damn good. Don Rickles, Bill Murray, Bieber, Madonna, Obama, Jaoquin Phoenix, Bill O'Rielly, Drew Barrymore, Cher, Chris Rock, etc.

This mini montage though will make you remember some of the funniest, craziest, loudest and bizarre moments on Dave's show. Surely there will be plenty more to come over the next two weeks as Dave gets ready to wrap up his career as the 2nd greatest late night host in the history of television.