The Matrix
First rewatch in at least a decade and I had a blast.
The only flaw I can see is that the real world and the war is not throughly explored enough. Obviously they get there in the sequels but I think the first one should have spent some more time on that instead of basically sidelining it to essentially a single expository scene.
Otherwise this is a completely perfect film. The sets and props and locations are unrivaled and this is probably the best sci-fi concept ever made.
A movie that I love as much today as I did when I was 13.