...(sorry to show off), I have just over 80 videos and a few DVDs and this one is still one of my favorites, in fact, I bought the DVD when I got my player even though I had the VHS already. It's never quite as good as the first time you watch it, because you have no idea what's going on until the end, and the plot twists are very surprising, but when you watch again, you notice more, and that's one of the things that can make a film great. Even when you know what's going to happen, it's still pretty to look at and the characterisation is well thought out so you appreciate it more on repeated viewings. It's not the easiest film to watch, as it has some disturbing and/or violent scenes, which are quite realistic for animation, and one or two sexual assualt scenes.
The animation is pretty good, and the drawing style is interesting. Satoshi Kon is clearly director too look out for, and this is his debut film, which means hopefully there'll be more in the future.