Joaquin Phoenix to return to Letterman show

'Late Show' books actor for Sept. 22; last visit was viral hit

NEW YORK -- Joaquin Phoenix is returning to the "Late Show with David Letterman" next week, CBS said Monday.

The Sept. 22 visit marks the actor's first TV appearance and return to the show since his much-discussed Feb. 2009 appearance, which will get a "Late Show" rebroadcast this Thursday. The appearance drew about eight million views online at the "Late Show" Website and on YouTube, according to CBS.

Phoenix is the subject of the documentary "I'm Still Here," directed by Casey Affleck.