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I'm very pleased to see a comment repping Sneakers on the top of the pile. A highly underrated true hacker classic! Ghost in the Shell rather than Patlabor?
I've never seen Patlabor. Sounds like I should. And Sneakers, asides from the magic, encryption-breaking MacGuffin, is some of the most realistic hacking in movies. What's the preferred tactic of these tech geniuses? Basic social engineering. Sure, they know a lot of other tricks, but why figure out a clever way through the badge system if a cake and some birthday balloons will work just as well?
Patlabor is fun, and has some cool hacker-relevant stuff, but isn't a great and serious movie like Ghost in the Shell. I do recommend watching it, but with suitable expectations!