H - How to Train Your Dragon
I - Ice Age
J - Jonah - A Veggietales movie (there aren’t a lot of other animated movies I know of that start with a “J”)
K - Kiki’s Delivery Service
L- Lady and the Tramp
M - Monster’s Inc.
I looked through the thread, I don’t think this one’s been used yet, which I thought was kinda ironic. Since this is Pixar Planet and all
N - Nightmare Before Christmas , The 
O Osmosis Jones
P - Pocahontas
Q - Quest for Camelot
R - Rescuers: Down Under, The … <3
S - Sintel
(animated short by the Blender Assosiation 
)
T - The Hunchback of Notre Dame
(I like this idea!)
U- Hmm… can Tezuka’s Unico count? I think that might be more of a series than a short, so… 