In comic-form, anyway: http://smbc-comics.com/index.php?db=comics&id=2124#comic
It’s not certain that A.I. will be friendly, but if we’re paranoid about it, it has every reason to be paranoid about us. Although realistically, an A.I. a million times smarter than a human would have nothing to fear from us. It reminds me of the Dr. Manhattan quote from Watchmen: “I’ve walked across the surface of the sun. I’ve seen events so tiny and so fast they hardly can be said to have occurred at all. But you… you’re just a man. And the world’s smartest man poses no more threat to me than does its smartest termite.”
Movies like The Terminator series give us a false sense of confidence, with a thin layer of paranoia on top. The idea that Skynet would strike when there was any doubt of its immediate and complete victory is just silly, unless you provide some justification for the timing, and there is a very narrow window there.
If we make an artificial intelligence, we’re screwed. This is only tangentially about A.I., but it’s pretty accurate as well: http://xkcd.com/652/
I don’t remember where I read this, but someone once said that the problem with advanced artificial intelligence is that it might see us, not as enemies, but as raw material that can be used more efficiently.