The actor was promoting the mockumentary 'I'm Still Here' when he delivered one of the strangest interviews ever recorded for late night television.

Joaquin Phoenix is looking back at the rollercoaster of awkwardness that etched his 2009 interview with David Letterman in late-night history.

On Tuesday night, the star said that he originally did the pre-interview in character and “I realized that it was just a little silly, so I called them back and I said, ‘Listen, this is what I’m doing. I’m coming out here and I’m doing this whole thing.’”

Former Late Show EP Rob Burnett tapped into his comedy writer background when he was asked about CBS' decision to ax the late-night franchise.

CBS announced its plan to cancel “The Late Show With Stephen Colbert” after the next TV season in a statement on Thursday, July 17. The network claimed it was “purely a financial decision.”