Joaquin Phoenix appeared on Stephen Colbert and apologized for his "horrible" interview with David Letterman in 2009.

Joaquin Phoenix says he regrets his infamous interview with David Letterman, in which he remained in character for the entire, awkward conversation.

Joaquin Phoenix used a talk show appearance to apologize for a past talk show appearance.

Joaquin Phoenix addressed his controversial 2009 appearance on The Late Show with David Letterman during a recent interview on The Late Show with Stephen Colbert.

Joaquin Phoenix says he regrets his 2009 interview with David Letterman on "The Late Show," calling it "one of the worst nights of my life." ...

Joaquin Phoenix addressed his controversial 2009 appearance on The Late Show with David Letterman during a recent interview on The Late Show with Stephen Colbert.

Joaquin Phoenix told Stephen Colbert on the July 15 episode of 'The Late Show' that his infamous 2009 interview with the show's former host David Letterman was 'just one of the worst nights of my ...

Joaquin Phoenix says he regrets his infamous interview with David Letterman, in which he remained in character for the entire, awkward conversation.

He appeared in character for his Casey Affleck-helmed mockumentary 'I'm Still Here', which saw Phoenix quitting acting to pursue a hip-hop career.