I didn't expect to like it and, in fact, only downloaded it because I like Kevin Spacey and am curious about anything he does.
I was prepared to hate the movie and in some ways feel I should - because a good portion of it is spent making jokes about sexual harassment and rape and that's generally not cool.
The problem is I can't hate it because it is hilariously funny. The last time I laughed this much during a movie was the first time I saw Bad Santa.
That sort of makes sense, because the reason this works is the same reason Bad Santa works - it's so fucking over the top balls out no excuses offensive that it no longer becomes offensive. It's sort of like the movie version of Sagat doing The Aristocrats joke.
Just when you think they can't possibly cross another line, they manage to find a way to do so.
Plus, casting Jennifer Aniston as a crazy nympho with a potty mouth is brilliant. We are so used to seeing her in nice girl roles that you can't quite believe it when she deadpans "Stick your cock in my slutty little mouth" or sits in a bathtub masturbating while having phone sex about being fucked up the ass. (Bob Newhart playing an evil psychopath is also pretty brilliant reverse casting.)
It goes without saying that Spacey is well cast as an asshole. Nobody can play an evil jerk better than him.
Overall, the movie is sort of a combination of Office Space and Bad Santa. And it's funnier than Office Space because it's willing to be a really, really nasty, crude, awful film.
There is no morally redeeming quality to anything in it - but damn it's funny.
That said, Girl With The Dragon Tattoo level trigger warnings for pretty much anything that you could possibly be triggered by ranging from racism to homophobia to prison sex, to child abuse, to sexual harassment to rape and probably some triggers I'm not thinking of. Let me put it this way - the tamest joke in the movie involves one of the characters shoving a Gillette Mach 3 up his ass.