There were some very good scenes and I really enjoyed the plot with Marcus Wright - part man, part machine. I think it did a good job of exploring a gray area that Connor hadn't dealt with before. It also moved the overall story arc of the series as we see how John becomes the leader of the resistance. However, I was very disappointed at the end. John is in Skynet's home base and there is only ONE terminator to fight? Not likely. Also, the beginning sets up the controversy of whether John is really the savior or a false prophet but was never brought up again.
The film lacked depth in the story line and depth of the characters and even the fighting scenes left me feeling a little disappointed.