I managed to catch Terminator Salvation on Sunday. It was better than I expected. The action scenes were great and exciting. Haven't felt this kind of adrenalin rush from a movie for quite some time.
You don't really have to know much about the earlier Terminator movies to follow the story. I would highly recommended it.
The next movie which I really want to watch is Up, Pixar's movie for this year. It's the highest rated movie I have come across on IMDB. Nine out of ten stars.