movies

I just got a copy of the movie " catch me if you can" staring leonardo dicaprio and tom hanks.

It seems to me I saw a movie maybe 20 years ago with a similar theme. In this movie, at one point the hero was a surgeon on a ship and did an operation from a book. Additionally he assumed several other characters. My problem is I can’t remember the name of the movie, or who starred.

If anyone remembers this movie I sure would appreciate it as it’s really bugging me

thanks, doug

Duplicate of http://boards.straightdope.com/sdmb/showthread.php?s=&threadid=194546