Tree of Life was absolutely profound. It was transcendent and spiritual. A perfect film.
Yeah in a strangely boring way apparently. 
I think there are films you have to watch knowing that you must take your time. Not just take your time, but be ready to be calm and go through it more or less peacefully, perhaps close to spleen.
I think it's a matter of some personal artistic jihad, somehow, to be willing to become purer by willing to sit through a film that is not about action but about a story that takes its time. You can't decide to rent the DVD and watch it. You must buy it, and then think quite some time for the right time, the right night for you to watch it. Preferably alone, without any pressure or stress. Perhaps even some headphones, being totally isolated. I think that's how some films really connect with the audience. Seeing them in theaters... nah, doesn't work for me. I have a collection of movies at home which I know I just couldn't watch in theaters, it's not the place for them. Those movies ask for strictly ad hoc experiences.