Already lots of LOTR & Tron: Legacy here. Not seeing much love for animated film scores, so on that note & in no particular order:

• How to Train Your Dragon trilogy, 1 is personal favorite
• Kung Fu Panda trilogy, 2 is so fucking good oh my god personal favorite
• The Lion King (1994)
• Spirited Away
• My Neighbor Totoro
• Spirit: Stallion of the Cimarron
• The Super Mario Movie
• Finding Nemo
• Up

A couple of these have great soundtracks, too, but I do love a good score.

Bandcamp or 7Digital for music

There are also fan run repositories of games hosted through Myrient and the Internet Archive if you just want some specific titles or need a particular version for patching.

For emulation, personally I like RetroArch over individual emulators for simplicity. Can recommend SameBoy & Gambatte for GB+GBC, mGBA for GBA, melonDS DS for NDS, & Snes9x for SNES. All are accurate (so not likely to make a game bug out) & run fine on my midrange phone.

The touch controls work fine for games where timing/precision matters less, and for the rest I just use a BT controller. Xbox & PS ones are compatible, I believe, & there are some great quality 3rd party ones (like 8bitDo) out there.