Mr. Smith Goes to Washington is possibly the best film that explains the process of making a law.
JFK is a good movie about how some people can distort something so much that it becomes ingrained into societies mind set. OSWALD DID IT AND HE ACTED ALONE DEAL!
Good Night and Good Luck, extremely powerful film about the Joseph McCarthy and the communist witch hunt.
If you want a really distrubing movie about Drug use, I suggest Reqium for a Dream. But it's really disturbing, frankly I think I'm still too young for that movie.
Grave of the Fire Flies is also an extremely insightful film. It's about living in Japan durring world war II. Also it's pretty sad.
Rent was pretty good.
Alive very insightful into human survival. Based on a true story.
Patton always a classic.
The Alamo while kind of historically inaccurate. Was pretty good.