05/17/2011 08:31 am ET | Updated Jul 17, 2011

Zach Galifianakis' Father Almost Too Loving 'Hangover' Star Tells Conan (VIDEO)

Zach Galifianakis fell from the ceiling onto Conan's set, and the interview continued to be both hilarious and weird from that moment on.

He talked about the difficulty people have with his name, his fidgetiness, seeing Donald Trump at the White House correspondent's dinner, and his overly loving childhood. He eventually also talked about "The Hangover 2": "The only odd thing is I had to audition for the sequel."

The revelations about his dad's seemingly whimsical nature as well as his propensity for mouth-kissing give you a sense of how this guy came to be who he is. You can watch that clip below. For the full interview visit