Terminator was better than I thought it was going to be.
But it suffers from something a lot of (especially action) movies I've seen recently, in that it needs much, much more spice, subtext, humor.
Even Star Trek, which had tons more than this movie did, could've used an extra shot of it (the first scene for example and the climax).
If only you could combine the action of Terminator with the great humor of Star Trek, we'd have the perfect summer blockbuster. (Until then, I recommend we all re-watch Iron Man.)