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.

The Emmys may be days away, but Joaquin Phoenix just served one of the most dramatic TV moments of the week. The Oscar-winning actor appeared on The Late Show With Stephen Colbert and issued a stunning apology for his now-notorious 2009 interview with David Letterman, calling it “horrible,” “uncomfortable,” and “one of the worst nights of my life.”

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.’”