Even though there's novels, TV shows, other movies and even toys to use as inspiration for their films, Hollywood writers still love to adapt real stories. Sometimes the result is a painful mangling of the facts (A Beautiful Mind, anyone?), but often the real story is as captivating as any a writer could have come up with. Of the 15 films below, some are true stories, while others are just very creative writing. Can you tell the truth from fiction?