India, July 17 -- After 16 years, Oscar-winning actor Joaquin Phoenix is looking back on his infamous February 2009 interview with David Letterman on The Late Show, calling it the worst night of his life.

Joaquin, who is currently promoting his new movie Eddington, appeared on an episode of The Late Show with Stephen Colbert. During his appearance, he along with the host looked back at the awkward live television moment after Stephen mentioned that Joaquin had not appeared on the program in 15 years.

Looking back, Joaquin said, "Yeah, it was strange, because in some ways it was a success and it was also just one of the worst nights of my life. When I came on this show with Dave, I originally did the pre-interview in character and I real...