Terminator - To be avoided at all costs (everyone agrees)
Wally - AI does its best to "take care" of us, turning us into infantile, unthinking, pleasure seeking dweebs. The ultimate basal brain utopia. But empty.
Star Trek (TNG) - AI as an assistant to help us fulfill our higher purpose and make us better at being a higher order being. There is no doubt that the ship's computer has advanced AI if you look at the questions posed to it by the engineers and the crew, but it does not impose its "will" upon them. It is an observer until directly asked, even when death is at hand (seemingly).
There is a very good video on YouTube about it, but I can't find it (right now) that explains it in a very accessible way (that's pretty entertaining) with no real knowledge of the underlying functionality necessary. I suggest you watch it. It's great!