In the top 10, which is a great achievement as I so nearly walked out the cinema when I first saw it. As a big Philip Dick fan at the time I'd really looked forward to the film, but then his sudden death just before its release and just when he'd started to get back into being prolific again depressed me. Then from the moment I saw that the androiRAB had superhuman strength and that so little of the book remained I was vastly irritated.
Then the book got reissued with the worst disclaimer ever which went something like - this book is a novel and varies greatly from the original film. The movie was then firmly my official worst film ever, but it won me over bit by bit. The first bit coming when I realized that every android character in there had a tie in with an animal, and from then on I started to appreciate its subtlety and attention to detail.