Willis O'Brien was an American special effects pioneer in the field of stop-motion animation.
King Kong
King Kong vs. Godzilla
The Lost World
The Son of Kong
Mighty Joe Young
The Black Scorpion
The Beast of Hollow Mountain
The Giant Behemoth
Just Imagine
The Last Days of Pompeii
The Dinosaur and the Missing Link: A Prehistoric Tragedy
The Ghost of Slumber Mountain
The Animal World
R.F.D., 10,000 B.C.
Along the Moonbeam Trail
King Kong: Monster and Myth
Creation
Morpheus Mike
Prehistoric Poultry
Emilio and His Magic Bull
Director
Ghost of 'Mad Dick', the Hermit (uncredited)
Director, Special Effects, Cinematography, Writer
Special Effects, Visual Effects
Set Designer
Visual Effects
Idea, Original Story
Visual Effects, Special Effects Supervisor
Original Story
Story