Thanks to the people who posted their opinions of this film. This movie was one of the best of 1998. The visuals were stunning, the plot ingenious, and a number of very interesting philosophical questions were raised such as: What is identity? and How do we know what objective reality is? Like most good sci-fi, there are things to quibble about and many unanswered questions, but so what? That only makes talking about it more interesting. Also, at 98 minutes the film is a reminder of how overlong many films have become and of the advantages of brevity.
Catch this one on DVD if you can. It's quite stunning and the separate audio commentaries by film critic Roger Ebert and the director are interesting too. You may want to watch this one three or four times.