In the new movie comedy "Meet the Parents," which held its New York premiere last night, Robert De Niro and Ben Stiller met their matches -- each other. In one of the film's funniest moments, a dinner scene, "Ben would start to laugh, which of course, made Bob start to laugh, which made me start to laugh," actress Teri Polo, who plays Stiller's girlfriend and De Niro's daughter in the flick, told PEOPLE. "We would all get settled down then I would laugh and make Blythe (Danner) laugh, which made them laugh." "I would usually laugh first," Stiller told PEOPLE. "I would break first." Added De Niro: "Sometimes you laugh at certain things. We had a good time." As did those at the premiere, who included Regis Philbin, Phyllis George and another George, New York Governor George Pataki.