I've not seen it so I'm not going to pass judgement on it. I only mentioned it so that more people click on this thread... What do you think is the worst music documentary that you have seen? My vote goes for Some Drinking Implied by Guided By Voices:

http://www.youtube.com/watch?v=Kr9JFo08KeE

I paid £2 for this crap! It is a 60 minute collection of poorly recorded live music (you can barely make out the songs) and Robert Pollard's friends being drunk.

Err... That Death Cab For Cutie film that came out a couple of years ago was pretty bad. I seem to remember one of the DVD extras is a deleted scene where the bass player says that he likes the English version of The Office.