In her next flick, "The Bounty," Jennifer Aniston is playing a New York Daily News reporter. And to make this seem as realistic as possible, the movie's director went so far as to film scenes directly in the Daily News offices. So over the weekend, Aniston and a small army of extras joined the paper's newsroom staff and roamed the halls and typed at computers, pretending to be real journalists. [NY Daily News]

Cool, but we kind of wish Jennifer had gone all the way and actually been a reporter for a few days. Or maybe she could have written headlines for the paper, and worked on her pun skills? Either way, here are some actors and actresses who've completely dove headfirst into roles.