In the same 'spirit' (and with an apparition of Lemmy), imo a better documentary :
Anvil, the story of Anvil :
Since 1978, Anvil has become one of heavy metal's most influential yet commercially unsuccessful acts. In 2006, after a fledging European tour Anvil sets out to record their thirteenth album and continue to follow their dreams.
RT :
http://www.rottentomatoes.com/m/anvil_t ... _of_anvil/
iMDb :
http://www.imdb.com/title/tt1157605/
Watch Online :
http://www.1channel.ch/watch-4390-Anvil ... y-of-Anvil
http://www.iwannawatch.ch/2011/02/anvil ... nvil-2008/