I have to say that I was somewhat intrigued when I first came across this docu-movie. I had mixed thoughts to begin with before I watched it - to be honest extreme sports and stunts have never really been my thing. But I thought - you know, why not - looks interesting.
I absolutely loved it! It gives a good story of the crew, including their past, and has a lot of gob-smacking moments - stunts which will make you laugh, cringe, and admire. From start to finish it was thoroughly enjoyable, even if you aren't in to extreme sports to begin with.
Before I came across this I never even knew who Nitro Circus was, or what they did. Now I know what they do, and how they do it. I simply have one word to describe them... Awesome.
Definitely worth a watch - you won't be bored or disappointed. That's a promise! - Just keep an open mind. My only negative was that I never watched it in 3D to begin with. I wish I had have done, and if you can, maybe you should too. You might even enjoy it more than I did.