I’ve written about The Tree of Life just days ago, but that won’t stop me from linking to this review by Salon’s Andrew O’Hehir:
Right now I suspect that “The Tree of Life” is pretty much nuts overall, a manic hybrid folly with flashes of brilliance. But even if that’s true it’s a noble crazy, a miraculous William Butler Yeats kind of crazy, alive with passion for art and the world, for all that is lost and not lost and still to come.
The review is comprehensive (and favourable), but above sentence on its own would have been enough to make me want to see the film.