no spoilers here.
My son and I went to see it. Over all, we enjoyed it, but it wasn't as good as any of the previous Terminators. We thought it concentrated more on explosions and special effects, rather than the story. Some things happen that seemed kinda jumpy (as in, why did he/they do that?) and I had some logic issues with some parts of the story.
The big 'twist' at the end was completely predictable and kinda lame. IMO, I'd recommend renting it over seeing it at the theaters. Star Trek on the other hand.
Minor spoiler after all - I loved seeing the A-10's in action, but HATED to see them shot down/destroyed :-(