Rob Zombie's Halloween II. I didn't much care for the first, mainly because he tried to cram the entire original movie into the last act. But in his sequel, he did his own thing, which turned out to be uncompromisingly brutal and occasionally emotional. Plus, the end twist was very promising.
And I thank the reason people hate the movies is simply nostalgia and an unwillingness to respond to challenging visuals. People generally go to slashers because they get a kick out of seeing people die, but Zombie refused to glorify the killing and thus took away people's enjoyment of human suffering. That, and they dismiss him because he's a musician or something.
