These pages contain the majority of the FMVs that you see throughout the game. They're all YouTube videos and I did not upload them to YouTube. As you might expect, such a section is going to contain many spoilers, so if you have yet to play Final Fantasy VII I suggest you do so before viewing the videos on these pages.
This FMV shows Junon and the Sister Ray Cannon.
Flashback of North Corel on fire.
Bugenhagen talks to the gang about the lifecycle of the planet.