It's still funny that Gates McFadden played Cathy Ryan in "The Hunt For Red October" (for all of ten seconds.) Dr. Crusher as Dr. Ryan. They did a bitchin' little bit of updating when they cut the book down to fit the movie, too. Originally, the caterpillar drive on Red October was a pair of propellers shrouded in inboard tunnels. That was changed to a magnetohydrodynamic drive for the film. At the time, I had remembered seeing something about that in an issue of Time or something.
"Now, that torpedo did not self-destruct. You heard it hit the hull. And *I* was never here."