I need help settling a debate between me and my brother-in-law. (Note: This is for the pre-rehab version of SE, and I'm going to see that version for the first time this fall so NO SPOILERS! )

Anyway, I say there are only two Disney movie clips shown inside Spaceship Earth...Snow White and 20,000 Leagues Under the Sea. He says there is also a Steamboat Willie clip. Is that the case, and are there any others we are forgetting about?