A qualified "go"
This was mostly as good as I'd heard. Norton, Pitt, and Bonham Carter all brought the crazy in a good way. The big twist was ruined for me years ago (and I wondered whether it would have been tipped fairly early on if I hadn't already known), but that didn't actually detract much. And, as someone I watched with said, "Anyone who watches it for the fights is missing the point." It is, by turns, thoughtful (and dead on) about the vapid spinelessness of consumer-driven culture, and completely full of it - I won't even get into the objections about the treatment (both in the film and as a component of it) of the one "real" female character in a movie all about wounded masculinity. I don't ever need to see it again - there's really only so much I can enjoy watching people's faces get bashed in - but I am glad I finally saw it.
That said, I want to officially object to the end. The first 3/4 - maybe 4/5 of the movie get 4 stars. The end gets 2.