Note: What I mentioned in my previous post is why I’m not a big fan of most “animal rights/veg” documentaries which attempt to focus on personal benefit (usually unobtainable by the general public because it is advertised in such a way that assumes the viewer can spend 500 dollars a week on food). I do not recommend such documentaries to those interested in veganism as a movement (e.g. Forks Over Knives, Vegucated, Food Matters, Hungry For Change, or even Food Inc.) because while that view of health may be important to you, it has nothing to do with animal rights. Neither are they entirely neutral in their intent: mentally damaging weight loss culture wrapped up tight in “concern for your health” packaging is not good for you, and is supported and maintained by consumer politics.
A diet is nothing more than a product being marketed to you after you have been told there is something wrong with you that needs to be fixed. A wholly fair and equal movement (which is what veganism attempts to be) wants nothing to do with this sort of shame-for-profit tactic.
A few documentaries I would recommend for those actively interested in participating in a global movement (for animals, environmental concern, and human rights interests) are Making The Connection, Earthlings, and Peaceable Kingdom. The first two are available online for free.