It's an ok movie, better than the last terminator, but certainly not a classic in the vein of the first two.

I agree with a post above that the terminator is ultimately about the thrill of a ruthless machine chasing after a human.

Also, the sneak previews of the future in the first 2 movies always kept us high on anticipation. In this movie, this element is simply gone since it is already the future. Sad but true.