Interesting article and pics on how the CIA recovered the film capsule from a KH-9 satellite.
http://www.wired.com/dangerroom/2012/08/cia-deep-sea-spy-sat/?pid=1442&pageid=88968&viewall=true
This pic, showing the effects of deep-sea pressure on styrofoam cups, is pretty neat.
(https://www.grogheads.com/forums/proxy.php?request=http%3A%2F%2Fwww.wired.com%2Fdangerroom%2Fwp-content%2Fgallery%2Fhexagon%2F034.jpg&hash=846fa91ecdea4447681ee40c7a96f1df5d7faea7)
They had one of those foam cup displays in the Titanic exhibit at the Mystic Marine life Aquarium's Robert Ballard Center. It's pretty amazing to see. Compared to the depths of the ocean, the pressure differential between earth atmosphere and the vacuum of space doesn't appear quite so impressive. That scene in 2001 ASO (jumping from pod to airlock sans helmet) is actually quite plausible.