The trailer for 'J. Edgar,' Clint Eastwood's upcoming biopic of FBI founder J. Edgar Hoover, has just been released.

Although the movie, which stars Leonardo DiCaprio in the titular role, isn't slated for theatrical release until November 9, it's already generating serious Oscar buzz.

The movie co-stars Naomi Watts, Judi Dench and Armie Hammer (whom you might remember from his role as 60% of the Winklevoss twins in "The Social Network'), and is expected to delve into the controversial methods Hoover used to gather information, as well as his lifelong struggle with a series of psychological issues.