When it comes to crotch identification, no one works harder than LAist. Last week one of our favorite LA blogs, Defamer, ran the underwear photo above (and to the right), accompanied with a story about a movie and blah blah blah. But the mystery remained: Who's Crotch is That?" Happily, our tireless hours of up-close interviews and in-your-face journalism have not been for naught. Thanks to an amazingly reliable source close to the project,......