I was shocked by the bold move to kill Amanda and destroy Vulcan, though it was less of an emotional response and more just being shocked that they would make a move like that. My reaction to those two things was very similar to my reaction in Avatar when they destroyed home tree. "Bah, they're the good guys. They won't really destroy the good guy's "base".... Holy shit, they actually did it!!!"
Yeah, that was my same reaction. I think I sat there with my mouth wide open in amazement when I realized that Amanda had just fucking fallen off a cliff. My emotional reaction came later when I saw Spock...and then when Sarek comes by and tells Spock the real reason he married Amanda..."because I loved her."
Man, for an emotionless race, they managed to get some pretty strong reactions out of me!