Letterman's Last Stand: Clooney, Oprah, Seinfeld and More to Guest

With only six weeks left before David Letterman officially bids farewell to The Late Show , the longtime late night host has revealed some of the big-name guests that will sit on his couch before he retires on May 20th . Jerry Seinfeld, Howard Stern, Oprah Winfrey, George Clooney, Will Ferrell, Tina Fey, Robert Downey Jr. and Tom Hanks are just a few of the stars that will visit The Late Show one last time. Bill Murray – Letterman's first ever Late Show guest and a fixture during the show's run – will also stop by at some point during Letterman's closing run.