i just remembered and I am searching for a Disney opening which was in front of films (at least here in Greece when I watched them on TV).
It had a white background, it started with the drawing of Mickey on paper I think, and showed how he developed to fantasia, then he jumped and we were on a scene from the Mickey and the Beanstalk, and then it showed various scenes from various animation films and live acion (i remember near the end Pollyanna and David Crocket). The music also changed accordingly.
I'm trying to find it in youtube but i can't.
Can anyone help?
edit:
Oops, never mind! I found it!!

https://www.youtube.com/watch?v=Hr0M6lt6KtY