Zach sits down for an interview with Bradley Cooper, the star of "The Hangover," "A Star Is Born," "Maestro," and upcoming dramatic comedy “Is This Thing On?” . Bradley Cooper: Between Two Ferns with Zach Galifianakis (2009) . #BradleyCooper #BetweenTwoFerns #comedy #nyff #astarisborn #comedy #sketch #interview #celebrity