Star Trek fans will be interested in this one:
The Captains
William Shatners hosts and directs this documentary which chronicles the lives and experiences of all the actors who played the role of the central captain in each Star Trek series: himself, Patrick Stewart, Avery Brooks, Kate Mulgrew, Scott Dracula Bakula and Chris Pine. Other actors like Jonathan Frakes and Walter Koenig make brief appearances. It's a pretty entertaining and candid documentary--they really open up about some of the more unfortunate consequences of the roles, which you don't often hear about (wrecked marriages, typecasting, etc.). And Avery Brooks in real life is waaay more eccentric and weird than I expected. Patrick Stewart is the best part of the movie. Overall a really solid and interesting movie for Trek fans.
Best part? It's on Youtube: http://www.youtube.com/watch?v=Npyj8PON_OA