Sneakers (1992) is by far one of the best nerd movise ever made. The cast is all-star. The science, aside from the major premise of the movie (you have to be willing to suspend some disbelief to watch any hollywood movie; why not the overall premise? it wouldn't be any worse than what you have to do to yourself to watch Snakes on a Plane) is tight. The acting is top-notch. The plot is complicated enough to hold interest, but simple enough to be reasonable.