Hang Up Your Brightest Colours - by Kenneth Griffith, a great documentary about the Irish rebellion against British rule - https://www.youtube.com/watch?v=jwNJ3aFZg44

The Civil War - by Ken Burns. One of his best and thoroughly well paced - https://www.youtube.com/watch?v=Y7HmBmWz9mI

Looking for Fidel - by Oliver Stone. Well worth watching - https://www.youtube.com/watch?v=fTObNESnogQ