Bill Murray was
Murray is one of the stars who will help bid Letterman farewell as he begins his final 28 broadcasts of "The Late Show" on CBS, the network announced Monday.
Letterman is retiring from the late night game on May 20 after 33 years. He joined CBS in 1993 after 11 years at NBC where he was host of "Late Night." His successor at "The Late Show," former Comedy Central host
In addition to Murray, the lineup of guests for Letterman's final month includes George Clooney, Robert Downey Jr., Will Ferrell, Tina Fey, Tom Hanks, Jack Hanna, Scarlett Johansson, Michael Keaton, Steve Martin,