Heather Graham Grills Bradley Cooper, Ed Helms & Zach Galifianakis - NBC Southern California

    Heather Graham Grills Bradley Cooper, Ed Helms & Zach Galifianakis

    Access special guest correspondent Heather Graham interviews her co-stars from "The Hangover" -- Bradley Cooper, Ed Helms and Zach Galifianakis -- about what makes them so funny. Also, why doesn't Bradley take off his shirt in the movie? Plus, Zach talks about meeting his Vegas impersonators (Published Wednesday, May 15, 2013) Access special guest correspondent Heather Graham interviews her co-stars from "The Hangover" -- Bradley Cooper, Ed Helms and Zach Galifianakis --... See More