Before I recommend this film, I must say that in order for you to enjoy it, you have to be at least open-minded to the idea of violence being a large aspect of a film. Like, not grotesque torture-porn, but more in the realm of Kill Bill.
If you're okay with violence, then you may just love this movie. I'm generally not a fan of violence in films (a lot of times it just seems like it's put in there for shock value alone) but this film specifically does a good job at showing how and why it's being used as a form of satire on American culture.
The movie itself is about a guy who finds out he has a terminal brain tumor, and because he's so disgusted with reality television, he decides to systematically go about killing reality TV stars.
This sounds demented, and it is. But that's the point. The movie itself is a very dark comedy, and if you're able to find humor in it, you're going to really enjoy yourself. I know I've taken huge issue with the extent to which reality TV has done its part to deconstruct "politeness" in American culture, and this movie does a good (and fun) job at really showing the extent to which that really is the case.
The beginning scene may be a little too jarring for some (even though they don't specifically show the thing that happens - it happens slightly off-screen) but once I got passed that scene, I really understood what the comedy of the movie was based on. I really liked it, and I've already recommended it to some of my friends who are obsessed with celebrities and reality TV.