Thanks for the 'Diet For All Reasons' rec - it was good! Kinda like The China Study in lecture form. =)
Here's my list of food/nutrition related docs. They're not all specifically pro-vegan, but still worth watching:
BBC's The Future of Food (3-part special)
Earthlings ***
Food Inc
Food Matters ***
Future Of Food (American feature-length film)
I Am An Animal - The Ingrid Newkirk Story
King Corn
Processed People Interviews
Simply Raw - Reversing Diabetes
Supersize Me
The Beautiful Truth - Gerson Cancer Cure
The Witness
*** indicates 'must see', in my opinion
Also this is coming out soon and I can't wait! -
http://forksoverknives.com/trailer/
Haha, can you tell I'm a documentary junkie?