Going back to the topic, the top 2 tearjerkers for me were (1) Ep. 18 of Clannad After-Story, starting when Tomoya remembers the past (tears just kept on coming down onward), and then (2) Ep. 13, when Nagisa gets a big surprise (this one I rate slightly below Ep. 18); in general, speaking, in one episode or another in Clannad I ended up crying, so I will not mention the rest of them.
The runners-up would have to be these:
-near the end of The Wind Rises
: I felt exactly the same way, even crying with the main character's sister
-the Little Busters! Refrain episodes in which the pasts of Masato and Kengo were brought up, and then also Ep. 11, when everything was revealed "and everything starts" (to quote the anime);
-the ending of Makoto's arc in Kanon;
-the end of Anohana;
-Your Lie in April, with the parts involving Kosaka and his mother and of course, the ending.
There are others, but these I will list.