Judd Apatow’s Knocked Up (B+) pairs schlubby slacker Seth Rogen and career-minded Katherine Heigl as participants in a one-night stand who are now parents-to-be. It’s a modern-day comedy about reverse courtship as the parallel notion of falling in love while expecting a baby brings out the best and worst of all involved. Apatow’s writing style is taboo-smashing; and while he sometimes could use a self-editor, what he gets right, he gets really right in this fresh comedy.