Gullette plays Max Cohen, the brilliant and tortured mathematician, beautifully and without overacting. His mind seethes with the possibilities that lie waiting inside number systems. However, the strain that his talent places on him results in blinding, hallucinogenic migraines. The scenes where Max falls victim to his ailment are tense, well-directed, and have just the right amount of creepiness.
The one beef that I have with this picture pertains to the other characters who are meant to be the film's antagonists. Two parties - a Wall Street firm and a Hasidic Jewish sect are after Max for his abilities. Neither of these relationships are expanded on enough to make the viewer care about them. Of the two, the sect members are the most believable. However, the stockbrokers and Max's encounters with them scream "film school". The loud-mouthed and overbearing businesswoman is more a parody of "the suits", and doesn't fit in with the rest of the film. You are left thinking that the only reason these characters appeared at all was as a plot device to get Max the parts he needed.
A minor, but nagging point - are we really to believe, in this day and age where nearly everyone has seen the inside of a PC, that Max's super-processor is a black cube with four pins? I saw this film with a bunch of other techie-type folk, and our collective reaction was "he's going to run his calculations on a bridge rectifier?"
All in all, this film is entertaining for those who enjoy offbeat cinema. Those looking for "The Matrix" aren't going to be satisfied at all. Math, science, and computer geeks won't wince too much. Hollywood SFX blockbuster this isn't, but that's not a bad thing. Overall, a good film with a few minor drawbacks.