The Motocycle Diaries (Che Guevara) is a fantastic movie.
I reccomend that everyone here, regardless of political ideology, go see The Motorcycle Diaries. The movie is about Ernesto "Che" Geuvara and his companion, Alberto Granado, on a motorcycle trip with the goal of exploring South America. The movie shows Ernesto (Che) and Alberto in their home-town, before leaving for the trip, with a romanticized sense of adventure about the trip. It goes on for a bit with some general adventuring, and later gets into the experiences that re-shaped Ernesto into Che and gave him the convictions which he later fought and died for (though the movie doesn't actually show any fighting or killing).
As I said, I don't think that your political ideology will really affect your ability to appreciate this this movie. Some people might see it as a story of a hero who picks up a noble and worthy cause, and others might see it as a story of a naive young man who tragically is sucked up into a movement that he can't possibly understand the consequences of. However you view it, the acting/writing is tremendous and it's a great movie in general.