I was 4 years old and it was Return of the Jedi in 1987. Apparently my parents bought the trilogy for my brother to give him something more adult to watch than the Disney movies they had for me, but because they weren't too bad my parents let me watch to and in the end, I was the one the fell in love with them. He liked them, but my obsession changed that quick. From age 4 til I was about 10 or so, those were pretty much the only movies I'd watch when I had to stay home sick from school and such.