Oh yeah how could I forget about Zabuza? Man I haven't cried like that since King Terenas said 'there must always be a Lich King' and I threw my computer out in frustration.
In all seriousness though, Zabuza's death caught me completely off guard. I never expected it to be filled with such emotion.
And Minato's death felt unnecessary. I mean, he should've been able to survive...somehoooooow.