I love the old terminator films as well.
And it brings up the age old question of what stops AI from turning against us when the time comes. And it is a question we should consider taking more seriously in the modern era.
I also liked the first Robocop, especially the satire of unregulated capitalism and greed.
My favorite film in recent times is Elysium, which is a realistic depiction of what the future holds if we continue on the neoliberal path. A planet full of an impoverished underclass with the wealthy living the high life far away from the suffering (that they cause) below.