Spoilers from the last episode of Sarah Connor Chronicles, which I just got to seeing tonight:
Holy shit, what a great episode. The middle of the season dragged, but the last several episodes have been great and I'll really miss the show, unless it's surprisingly renewed at the last minute.
I don't think I've ever seen a major character death treated as realistically as Derek's. I really enjoyed the character (which I wouldn't have thought the first time I saw Brian Austin Green of all people on this show), but it was almost worth losing him for the way he went. Amazingly ballsy.