Titanic's lavish production was filled with odd moments, but few were as strange as its climactic sinking sequence.

Not literally, of course. But the legendary watch owes its popularity—if not its underwater cred—to everyone's favorite spy.

James Cameron is best known for directing some of the biggest movies ever made—Titanic, Avatar, Aliens, The Terminator, but what many fans don’t realize is that he sometimes sneaks into his own films.

Legendary director James Cameron makes a clandestine appearance in his 1984 actioner The Terminator but most fans have no idea.