I found a DVD called "Able Edwards" at Best Buy this week. Released theatrically in 2004, this film tells of a "Walt Disneyesque" character (their description) who is cloned in the future.
Able is clearly supposed to be Walt, he starts as an animator then develops a theme park etc, etc.
It's an interesting study of what being a clone would be like.
What was most interesting about the film is that the entire film was shot against a green screen like Sky Captain (which was made later, actually.)
Here is a screenshot from the begining of the film:
And here is an iconic shot from later in the film:
Anyone else see this?