Pretty much every film that has made it into the house on DVD.
It started with Kung-fu Panda and DS1. It continued with everything else.
Favourites are:
How to Train Your Dragon, 1 & 2 and all the tv series
The Croods
Madagascar 1, 2 and 3
Despicable Me 1, 2 and the Minions movie
Shrek, 1-4 and the short holiday ones
Ice Age 1-4 and the short holiday ones
Monsters vs Aliens, and the Hallowe'en one even more than the main film
Boxtrolls
Kung-fu Panda for the second time, also KFP 2 and Legends of Awesomeness
Pixars, less so, although we have seen Finding Nemo countless times, the Incredibles a few times less and all of the others too.
Despite only having 2 boys, we do have Frozen and Tangled, both popular; and some of the Tinkerbell movies, of which the Pirate fairy and the Neverbeast are the favourites.
There are many many more.
DS2 knows the script for the Croods, and for How to Train your Dragon...
They both like to watch a new film back to back about 3 times, given half a chance - total immersion, or something.
And yet some, I still haven't managed to watch the entire film - I seem to be able to zone them out...