I know its probably cliche' by now but i went back a few pages and didnt see it, so lets hear em!!
My fave isn't my 1st I saw but the 1st one I owned and to this day is still truly amazing to me. I still watch it at least monthly and watched my VHS version so much it barely plays now (but now I have the collectors set on DVD!!!!)
2nd is somthing that has a overwhelmingly great storyline and ... hmm an anime about a RPG..... its a winner to me, but the loose ends at the end pissed me off... still a winner in my book though
3rd for me -Ghost in the shell.... a classic
3--Ghost in the Shell