A common theme in time travel film is the paradoxical nature of travelling through time. In the French New Wave film "La jetée" (1962), director Chris Marker depicts the self-fulfilling aspect of a person being able to see their future by showing a child who witnesses the death of his future self. "La Jetée" was the inspiration for "12 Monkeys", (1995) director Terry Gilliam's film about time travel, memory and madness. The "Back to the Future" series and "The Time Machine" goes one step further and explores the result of altering the past, while in "" (1996) and "Star Trek" (2009) the crew must rescue the Earth from having its past altered by time-travelling cyborgs and alien races.