NEW YORK -- Actor Joaquin Phoenix returned to David Letterman's "Late Show" on Wednesday to apologize for his wacky appearance last year that turned out to be an elaborate piece of performance art.

Joaquin Phoenix has been booked for David Letterman's "Late Show," and here's hoping it's as awkward and unintentionally hilarious as his last appearance. Phoenix, 35, was last a guest with Letterman ...

David Letterman definitely knew something was off. But despite what his writer previously reported, he did not know what Joaquin Phoenix was up to last year. That’s why I’m Still Here actor – who ...

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Actor Joaquin Phoenix has apologized again for his awkward 2009 interview with David Letterman, calling it “horrible” and “so uncomfortable.” At the time, Phoenix was in character for the making of ...

"You've interviewed many, many people and I assumed that you would know the difference between a character and a real person, so - but I apologize," Phoenix said. "I hope I didn't offend you in any ...