Re: Star Trek III - The [Speculation Begins] (Spoilers)
Getting back to speculation on the next movie, I dont' know if this has already been suggested, but what if Khan's blood messes Kirk up somehow, turns him dark while they are out there exploring, and Spock and the crew have to figure out how to save him, before he does something really bad.
Pine isn't a good enough actor to carry anything like this off.
My name is Pain. You belong to me.