Isaac created the "Three Laws of Robots," which are referenced constantly in discussions of artificial intelligence. Those laws are

1. No robot shall harm a human being
2. Robots shall serve humans beings as long as their commands do not conflict with #1
3. A robot shall try try to ensure its own survival unless it could sacrifice itself to save a human.

There are also some
Asimov stories about a supercomputer (I think it's called Multivac or Univac). I remember that one of them deals with the issue of how the computer responds when it understands that humanity's biggest enemy is itself.

I seem to remember a scene where a robot politician posing as a human is speaking to a public crowd. Supposedly, robots are programmed to be unable to lie to humans (quite comical in the case of a robot politician). The robot politician gets around this by planting several robots in the crowd who are also indistinguishable from humans who asks questions of him which he can then lie in response to in public. I rememebr one of the questions being "Are you a robot?," to which the robot politician answered, perfectly in line with its programming directive, "No, I am not."

that might be in "The Bicentennial Man."

Anybody read Harlan Ellison's "I have no mouth and I must scream?" I think that's right title.

I would have read it, but the computer has taken my eyes. And when I learned braille, it turned my hands into claws. ;)

Could be. I just checked "The Bicentennial Man." It's been *at least* fifteen years since I plowed through Asimov :)

Logan's Run was a movie (based on a book) that relates here...People led by a destructive AI that kills everyone off at 30... Fascinating stuff.