I was trying to remember the name of this really random old movie I once saw on TV, and I didn't remember very many details about it. But right before I went to ask the board, I tried one more google search, and I must have hit the right combination of search terms because it was the first thing that came up! I highly recommend it if you're in the mood for some crazy science:
http://en.wikipedia.org/wiki/Voyage_to_ ... of_the_Sea