I must admit, I think one of my favourite movies is Thirteen Days.
It's got political tension, military tension, some action, good scripting and is based on real events. There are some liberties taken, yes, but it was very enjoyable to watch.
Gandhi is another great film, an epic in fact, and Ben Kingsley deserves the Oscar he won for it, one of the eight Oscars that the film won. Very highly recommended.