NEW YORK (AP) — David Letterman is packing his final 28 shows as a late-night host with a who's who of Hollywood names and favorites leading up to his May 20 swan song.

CBS announced Monday that his guests will include Bill Murray, George Clooney, Steve Martin, Jerry Seinfeld, Robert Downey Jr., Will Ferrell, Tina Fey, Tom Hanks, Scarlett Johansson, Sarah Jessica Parker, Don Rickles, Julia Roberts, Ray Romano, Howard Stern, Oprah Winfrey, Martin Short, John Travolta, Michael J. Fox and Alec Baldwin.

And there will be others who haven't been announced yet. Musical guests will include Elvis Costello, Dave Matthews Band, Mumford and Sons, Norah Jones, Amos Lee and Tracy Chapman.

Letterman hasn't specified who, if anyone, will join him for his final show after 33 years on late-night TV.