Hoo boy. This show may as well be Tear Jerkers: The Series
Menma is driven to tears more than once.
From episode one, no less:
"Onee-chan was a bit air-headed, so maybe she hasn't even realized she died." "I know."
Episode 5, when Poppo's request for Menma to come out and reveal her wish slowly leads to him pleading in desperation for her to appear...which causes Menma to cry, in turn. It's harsher when you realize why Poppo is so desperate to help Menma out.
Anaru is driven to tears by her classmates' rumormongering in Episode 6, then to happy tears by Jintan standing up for her. Mrs. Honma also tears up when Jintan, Poppo, and Anaru come to pay respects to Menma.
Jinta, when he remembers that Menma will disappear forever if her wish is granted.
Menma's letters to her friends, telling them what she loves about them. Especially the one to Jintan - "I love you, Jintan. My love for you is the sort of love where I want to marry you."
Jintan losing his ability to see Menma, after being the only one who could for so long.
FOUND YOU, MENMA!!!
You found me...
Let's just say the entire final episode, in which all the characters and most of the viewers spent most of it bawling their eyes out. Chances are your heart strings were twinged or a lump brought to your throat... or just full-on bawling.
The Movie actually manages to make it worse, by showing what happens after Menma disappeared.
The thick air of nostalgia is enough to make for at least one per episode.