Iron Man (2008)
A robotic suit of armor that allows you to fly, gives you enhanced strength and an arsenal of weapons.
Not as clumsy or random as a blaster; an elegant weapon for a more civilized age.
1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.
How it works: Turn the machine on at 9am, Enter machine at 3pm, Wait in machine for 6 hours, Exit machine back at 9am again, Influence the timeline with your knowledge of the future.