Haunted Mansion, The Easter Egg - Busts and Madame

Madame Leota is actually named for Leota Thomas, who wan and "Imagineer" on the Haunted Mansion

One of the eggs in this section says that one singing bust is actually Walt Disney, but according to the IMDb, it is actually Thurl Ravenscoft, an "imagineer", but it also says he is quite often mistaken for Walt himself. Another bust is "imagineer" Paul Frees