ट्रिविया

Has a graduate degree from NYU where he also teaches.

Is a classically-trained singer.

Helped to create The New Bozena for the stage with Rainn Wilson (The Office (2005)), who he has been close friends with for many years.

His paternal grandparents were Italian. His mother is of three quarters Irish and one quarter German descent.

Graduated Gonzaga College High School, Class of 1985.

Born David Michael Costabile in Washington, D.C. He is the son of Mary and Salvatore Costabile.

In America his surname is pronounced ko-stah-BILL (like in the man's name).

In He's Back (2013), David Costabile is slapped twice by Sarah Rafferty.