The only thing more fun that listing your favorite horror movies is listing the worst horror sequels you've ever seen. There's no feeling quite like seeing the fourth or fifth instalment of a once-profitable series and asking yourself, "Did they even try to make a good film this time or did they just assemble this from the scenes cut out of the earlier films?"
There are some movies that never needed sequels. The Exorcist probably ranks at the top of that list, but that certainly didn't stop them from making what is supposed to be one of the worst sequels of all time. Psycho also got an unnecessary sequel, but I have to admit I find Psycho 2 somewhat entertaining, if you can get past the blasphemy of making a sequel to a Hitchcock classic.
And I know I'm probably the only one on the planet who thinks this, but I feel like Blair Witch 2 was an interesting experiment. I think had the studio not butchered it in post, it might have been better received. (Also, I think the movie's biggest mistake was to proceed from the premise that the "found footage" from the first film was false. Had it been treated as "real," the revelation of the sequel's own video footage might have carried more weight.)
There are so many terrible horror sequels that it's hard to peg which one is worse. Is Freddy's Dead really significantly worse than Freddy's Revenge? Is Halloween II worse than Halloween II? (God, I love how reboots screw up the numbering system.
So what say you? What horror sequels rank as your all-time worst?