I finally saw this movie the other day, and it is intense. Really intense. I have a soft spot for James Franco because he plays my favorite character in Freaks and Geeks, and I have liked him since the first time I watched that show when I was like 10 or something, so watching him in that role was tough for me. It's supposed to be tough, obviously, as being stuck with one's arm under a rock pretty much blows. It made me feel incredibly sad and inspired and ill. Watching the arm amputation did not bother me nearly as much as watching James Franco drink his own urine. The way those parts were shot (the drinking of any liquid) is what made that part so gross for me.
It is a very beautifully executed film, and I definitely think it is worth watching. I am not sure I believe James Franco deserves an Oscar for that role, but I'm not one of the few voting, so I guess that doesn't matter.
I suppose that's all to say about this one. Danny Boyle made the film in a way that forces people to feel the way they should feel watching a man go through that kind of experience. Mischief managed.