Harrison is an amazing matte artist and is best known for his work on TRON (1982), Superman IV: The Quest for Peace (1987), Star Wars: Episode IV – A New Hope (1977), and Star Wars: Episode V – The Empire Strikes Back. Ellenshaw eventually became the head of Disney’s effects studio, Buena Vista Visual Effect, and worked as its executive producer in Escape from L.A. (1996, John Carpenter)