This surprised me
I had this movie for a loong time, before I finally decided to watch it.
The reason is that I have a really short attention spam, and the majority of this film is basically just one scene (a guy trapped in a canyon). Which is not the only movie made like that, but it takes a really skillful director to make it work.
But Danny Boyle manages to make this very intense and never boring, in fact it was one of the rare late movies that DIDN'T bore me once in it's entire lenght.
So I really recommend this piece of art to everyone.