Brian Stack

Brian Stack (born August 18, 1964) is an American actor, comedian, and writer best known for his sketch comedy work on all three Conan O'Brien late-night talk shows, previously working on Late Night with Conan O'Brien and The Tonight Show with Conan O'Brien, and on O'Brien's current talk show, Conan on TBS. Stack left Conan in April 2015 to join the writing staff of the CBS series The Late Show with Stephen Colbert. 2Early life Stack was born in Chicago, Illinois. He attended Catholic schools from grades 5-12, graduating from St. Viator High School in Arlington Heights, Illinois. He earned an undergraduate degree from Indiana University, where he was inducted into Phi Beta Kappa. He worked at the college radio station and drew cartoons/illustrations for the Indiana Daily Student. He began doing improvisational comedy, or improv, in 1987 at the Ark Theater in Madison, Wisconsin, while attending graduate school at University of Wisconsin–Madison. 2Career Stack got his start in comedy with the improv comedy troupe The Second City. 3Late Night with Conan O'Brien Stack became a sketch writer on Late Night with Conan O'Brien in 1997, and served as a writer and actor on the show. He first appeared onscreen when one of the writers asked him to play a doctor in a sketch in which he had no dialogu