Context : 12 Monkeys, also known as Twelve Monkeys, is a 1995 American neo-noir science fiction film directed by Terry Gilliam, inspired by Chris Marker's 1962 short film La Jetée, and starring Bruce Willis, Madeleine Stowe, and Brad Pitt, with Christopher Plummer and David Morse in supporting roles. 
Answer : La Jetée
The 12 Monkeys is based upon what?