I saw it last night.
Like most peeps say, if you truly want to enjoy it 'to the fullest', then you should read the graphic novel.
Otherwise, there is graphic violence, no one can disagree on this, but few seem to realize there is a symbolism and underlying tone of humanity vs human nature within these violent scenes. Plus the violence, sex, blue balls and penis, all play an important role in the final message of the movie.
Good graphics, great voice acting (Rawshack, really kicked ass), can be slow at certain parts but very good overall. Surprisingly it didn't feel like three hours at the end of the movie, more like thirty minutes later, and that's a triumph, considering LOTR makes you ancy as a jitterbug by the time you are done. Also, it seems that a lot of people miss out on the fact that the story is actually a parody of the 70s, not the eighties and all the problems that were dealt with during that time.
They did a good job considering the author had intended the graphic novel in its original design not to be capable of being replicated by the film industry.