After Alien and before Terminator, True Lies and Titanic, James Cameron and directed "The Abyss", an underwater sci-fi/action/adventure. Ed Harris is superb as Virgil "Bud" Brigman, the head of an underwater drilling platform. If you've never seen this, I don't want to give it away. It has a disaster, suspense and aliens as part of the film. What more could a nerd like me want out of a movie?

"The Abyss" stars Ed Harris, Mary Elizabeth Mastrantonio, Michael Biehn and a bunch of other people I never heard of. Here's a trailer: