My contribution to this thread -
Some famous Imagineers' used their own faces in place of some of the presidents in WDW's 'Hall Of Presidents'.
Herb Ryman, John Hench, Marc Davis, and a recently hired young upstart named Tony Baxter all provided face casts to create the basis for the sculpts for some of the lesser known presidents.
Herb Ryman was James Monroe (#5), John Hench was John Quincy Adams (#6) and Marc Davis became both Martin Van Buren (#8) and John Adams (#2).
The record holder however was Tony, who was actually face cast for FOUR presidents...James Polk ( #11 ) just one.
One of the four he was cast for is said to still be part of the show.
Don't believe it...?
Read here...and ponder.....
http://www.parkeology.com/2010/04/hall-of-imagineers-or-how-mop-saved-day.html