Stephen Colbert is closing out The Late Show with a star-studded final week of guests including Barack Obama, Tom Hanks, David Letterman, and his fellow late-night hosts, ahead of the May 21 CBS finale.

CBS announced its deal with Allen in April, giving him the full 11:35 p.m. hour to air back-to-back episodes of “Comics Unleashed” Mondays through Fridays. Allen will also continue to own the following hour, as his comedy game show “Funny You Should Ask” shifts its schedule.

Someone get that dolphin his own show stat!