http://www.imdb.com/title/tt1333994/

So essentially a response documentary to Supersize-Me in which a normal guy goes on a diet eating every meal at fast food places and loses weight. It then goes on to talk about how there are a lot of nutrition "gurus" that don't base their ideas on scientific evidence, and that these ideas have really become so mainstream that it's hard to change them.

I highly recommend watching it with a plate-full of bacon.

I lost 30 lbs. on Nos and occasional salads.

When I was working on Penn & Teller: Bullshit!, we did an episode on fast food and it was really interesting having to do research for it. I wish I had known about this documentary back then, it probably would've helped as we tried to make a similar point. I'll have to check it out.

Woah you worked for Penn & Teller?

FFF- who are you.

From the IMDB viewer review:
Which is quite different from SSM, where he ate every item on the McDonald's menu at least once, and only ate food from McDonald's and nothing else. Every time they offered him to super size, he did.

Well, you can't actually see the dietary logs from Supersize me... Which is one point he makes in this movie.
It is also shown to be rather difficult to eat 5000 calories a day at McDonalds, which is what supersize me claims.

It's interesting if you just compare the menu of McDonald's to someplace like Wendy's. While McDonald's has made an effort to reduce calories in their food other fast food places have not so much.