65th Academy Awards
There was a minor controversy when Snow White (Disney character) was presenting an award for Best Animated Short Subject. She was voiced by Mary Kay Bergman, Adriana Caselotti, the original voice of Snow White was not aware of this. She was reportedly offended that Disney didn't ask her to voice Snow White during the ceremony.
Ed Wynn
Wynn provided the voice of the Mad Hatter in Walt Disney's film, "Alice in Wonderland" and played The Toymaker alongside Annette Funicello and Tommy Sands in Walt Disney's "Babes in Toyland" released in 1961.