So this is My anime list of all the anime I watched that were able to bring a tear to my eyes. It is mostly focused on romance/drama as you can see from the names here, and most of them have happy endings, but not all of them.
On a second thought, I would say this list is probably one of the animes that for some reason brought a somewhat warm and fuzzy to my existence, and some that made me really feel the characters. So you will find not only the typical love stories, but some sad ones, like "school days" and "Tokyo magnitude" and even for some romance comedy like "Sekirei" or even just some good emotional evolution towards the relations between characters like my 2 favorite animes "Rurouni Kenshin" and "xxxHolic"
I made this list after finishing "Tasogare Otome x Amnesia" and realizing once more how much of a sucker I am for this kinds :P
And had to make the list to being able to remember the best ones I had seen.
Hope you enjoy them as much as I have.