12. Ghosts of the Abyss (2003)
Director: James Cameron
Stars: Bill Paxton, Lori Johnston, Lewis Abernathy
Call it Avatar 101. Or Titanic: The Sequel. Before he was finalizing the techniques that would bring Pandora to life in 2009, James Cameron was tinkering with them when he took his 3D camera two miles below sea level to explore the wreckage of the Titanic in this unscripted exploration of "The Ship of Dreams." Audiences went along for the ride, and got the chance to go where few people had been before, for this documentary feature shot specifically to be seen in IMAX 3D.