One of the more sentimental romantic comedies from the Farrelly brothers. 

When a freak accident ruins Ted Stroehmann's (Ben Stiller) chances of taking Mary Jensen (Cameron Diaz) to the high school prom, everything changes. Never fully recovering from the embarrassing ordeal, Ted becomes obsessed with the idea of running into her again under better circumstances and hires a private investigator to track her down. But as the title suggests, there's something unique about Mary that makes more than one guy fall for her throughout the movie, and watching each of her suitors sabotage the other in their pursuit of Mary is pure comic genius. Find yourself doubled over with laughter during some key scenes while you root for Stiller's character to get the girl.