Alone in the Wilderness is another great one about a 50 year old guy who goes out to the dep north of canada and builds his own cabin by hand and becomes completley self sufficient. It's a pretty quiet movie, but it's definitely inspirational.

Jesus Camp...scared the living crap out of me.

Murderball was great.

The Endurance is another 'adventure' documentary about Shackleton and his journey to the south pole. There's a few different versions of this tale, but this one was pretty good.