Comedy-meister John Hamburg -- who penned Meet the Parents, Meet the Fockers and Zoolander -- offers an amusing take on the art of screenwriting in this extensive interview. Hamburg, who also wrote and directed the box-office hit Along Came Polly and the cult favorite Safe Men, describes how delivering monologues helped him develop a flair for dialogue and reveals what it's like to hand script changes to megastar Robert De Niro.