I have a lot of nightmares. Most of them actually do indeed involve amusement parks and dark rides. I'm actually in a stage of relative satisfaction in my life, so they're not as common lately, but when I'm depressed, HOT DAMN do I have nightmares about ceaseless dark rides.
it really is a good (if creepy) movie. the book is better, but that's frequently been my experience. oh, and they replaced the hot air balloon scene with a traumatic tarantula freak-out.
Jonathan Pryce is excellent in this, and the Dust Witch is played by PAM GRIER