How Douglas Trumbull's 1972 low-budget, bleeding heart science fiction classic yielded not just the basic look of, but the humanity of R2-D2 and robots everywhere.
Lucas went to see Forbidden Planet for his 12th birthday, and never looked back. The equivalent to what Star Wars would become for later generations, it was indeed an Amazing! Never Before Seen! science fiction extravaganza, and it left its DNA all over Star Wars.