Best Music Documentaries

Just to get the ball rolling on a new topic, anyone have any recommendations for great music documentaries to watch over the hols?
Some that I highly recommend are:
Anvil! The Story of Anvil (we need to get them to play in Chengdu! Zebra take note!)
Dig! (Anton is God)
Loud Quiet Loud (Great one on the Pixies and good advice on not taking Valium before a show)
Air Guitar Nation