Even though the plot was pretty much clear from the start, the first part of the movie was enjoyable. A certain tension, a certain nostalgia. But then it all starts going downhill until it end in the sewers. The vague ethical elements never rise above kindergarten level, the science is preposterous and the "USA is the world" assumption is tedious. The acting is decent, so is the music and lighting. Too bad, as with nearly every movie these days, the plot didn't get as much attention.