This movie was great at tying T1 and T2 together. The plot was good, the acting was great, the special effects were awesome. I've read that it should've had a subplot, but really I didn't see the need or the time for it. I think the time was better spent on this main storyline,and there were plenty of different characters to follow.
My only reason for not giving it 5 stars is because I don't know if someone not seeing the 1st & 2nd movie will be as interested in the plot, since it follows the path and destiny of previously laid out characters. (I don't consider the 3rd as good)