Food and Health:

Fat Head (2009) http://www.imdb.com/title/tt1333994/ Especially if you've seen "Super Size Me", but even if you haven't, an amusing yet educational take on the obesity "epidemic".

Food, Inc. (2008) http://www.imdb.com/title/tt1286537/ - Exposing the absurdity of our industrial food economy.

Music and Entertainment:

Anvil! The Story of Anvil (2008) http://www.imdb.com/title/tt1157605/ Talk about never giving up on your dreams.

Metallica: Some Kind of Monster (2004) http://www.imdb.com/title/tt0387412/ The other side of fame.