Richard Creedon

One of the Disney guys.

Snow White and the Seven Dwarfs (1937) -- Co-directed with Walt Disney, Dorothy Ann Blank, William Cottrell, Merrill de Maris, David Hand, Wilfred Jackson, Larry Morey, Perce Pearce, Dick Richard, Ben Sharpsteen, and Webb Smith. To realize that this came out less than ten years after Steamboat Willie (itself a breakthrough) is pretty amazing: a full-blown feature length musical animated movie in color. You can trace back pretty much every animated movie back to this one, and not many have surpassed it.