David Mamet has written Tony Award winning plays like "Glengary Glen Ross" and Oscar nominated screenplays, including "Wag the Dog" and "The Verdict." He's just written a book about his experiences in Hollywood, called "Bambi Versus Godzilla." Mamet talks with Steve Paulson and says the secret to writing a successful screenplay is to focus on what happens next. That's all the audience cares about.