Buzzfeed has put together a list of Disney facts that even the most hardcore fans may not know about.
Robin Williams got into a huge fight with Disney shortly after the release of Aladdin. The source of the argument came from him taking a huge pay-cut in order to voice the Genie (which he did because he wanted to do it for his kids). The one thing he asked for in return was that his voice not be used for merchandising products or marketing. Disney agreed, but then realized that the Genie was really the star of the movie and ended up using his voice for both of those things.