most of mine have been mentioned (chosen, becoming, the gift, the body etc) - but ill add a few more just to show what a crybaby wuss i am!
seeing red - tara gets shot, just when she and willow are happy; dammit.
grave - xander saves the world with words. "ill still love you". yeah!!
earshot - the speech about everyone being lonely. so true.
selfless - anya being stabbed, and killing all thsoe people.
angel - cant think of any unmentioned ones off the top of my head
firefly - well, it's more serenity, but my lips are zipped just in case...