Stars You Didn't Know Were Related
by Alex Ungerman 3:50 PM PST, February 13, 2014
Conan O'Brien - Denis Leary
Alright, we all know laughter is contagious, but no one said anything about it being hereditary.
As it turns out, Leary, the comedian at the helm of Rescue Me, and Conan, the talk show host with the most, are third cousins.