From Wikipedia on Warwick Davis: 'When Davis was 11, his grandmother heard a radio advert calling for people who were 4 feet (1.2 m) tall or shorter to be in Return of the Jedi.[7] To Davis, who was a fan of the Star Wars films, it was a dream come true. During the filming of Return of the Jedi, Mark Hamill bought Davis every Star Wars figure he did not have.[4]'