I know that there's more but I'm waiting for the rest of the HQ extensions.
... (Lance/Red Battle Remix)
https://www.youtube.com/watch?v=Dthvr3pKDRU
N's Farewell (Picture changes at last 30 seconds)
https://www.youtube.com/watch?v=twS3NchgR88
Route 209
https://www.youtube.com/watch?v=T63zXoUbEZ8
Hoenn Region Credits
https://www.youtube.com/watch?v=BoAlLTZ9Sig
Which one is your favorite?