Mike O’Brien has the distinction of being responsible for Marc Maron crossing over into the world of improv. With a background in the Chicago improv and sketch scene and seven seasons writing for Saturday Night Live, Lynn Shelton approached Mike to help create a movie that would be entirely improvised by the cast. That movie was Sword of Trust starring Marc Maron. Mike and Marc talk about the making of the film, Mike’s comedy background, and the fan movement that gave Mike’s TV show, A.P. Bio, a new life.