It's adapted from a Philip K Dick short story, and it's typical Dick -- at the center is a likable everyman who finds out that reality is not what it seems. If you haven't seen that one, you've probably seen at least half of these Dick adaptations:
1982: Blade Runner -- Harrison Ford stars as an everyman cop who figures out he might be a robot in disguise.
1990: Total Recall -- Arnold Schwarzenegger stars as an everyman construction worker who figures out he might be living in a computer simulation, or is a secret agent who has been programmed with a false personality.
Some adaptations are...looser, than others.
1995: Screamers -- Peter "RoboCop" Weller stars as an everyman soldier who realizes the human enemies he thought he was fighting are actually robots in disguise.
2002: Minority Report -- Tom Cruise is an everyman cop who realizes the pre-crime unit he works for is not what it seems.
Man, you could spam dozens of YouTube comment #2es at a time with a computer like that.