tribe is a fantastic documentary series
I think you can get some video clips on the bbc "tribe" minisite
http://www.bbc.co.uk/tribe/
you can download the first series here
http://www2.digitaldistractions.org:...=documentaries plus a lot ray mears series too
definitely my favourite feature length doc, like watching a real life spinal tap for films
I'm very surprised louis theroux hasnt been mentioned yet, his documentaries are always so entertaining and sometimes quite scary, particularily the one with the nazis and the one with the black nationalists who tried to claim that all of history's greatest people were black
also
The artist formerly known as captain beefheart
fearless freaks
the living planet
life on earth
year of the horse
dogtown and zboys
looking for truth with a pin (about Ivor Cutler)
I'd like to see derailroaded and titticult follies