Saw a movie over the Thanksgiving Weekend, and one of the previews in the theater was for "Saving Mr. Banks"
I had qualms about about Tom Hanks portraying Walt Disney, when first hearing he was going to do that, BUT never in my wildest nightmare did I think Tom would attempt to do Walt with a Southern Accent. Tom's higher pitched voice doesn't work portraying Walt, either. It's unfortunate the he just was not capable of pulling off Walt.
Tom may be good at portraying some fictional characters, BUT when it comes to portraying Real people, Tom should just stay away from that.