Stephen King movies are hard to call - but this one was really good. One of the few I felt that kept up with the book; managing NOT to come across completely ridiculous. Psychologically stimulating, fairly decent acting, typical dialogue (for King), and some Nice special effects. Imagination IS needed, but if you're able to 'go along' with the fantasy then you'll love it.
An ending only the Horror Master could have created!!
[Note: Some truly gruesome scenes appear - not for kids.]