Well... they originally wanted Captain Jack Sparrow to be Jim Carrey, So it definitely would have been different, plus Captain Jack would have looked super different since the Dreds, Facial hair, scars and all most other accessories were Johnny Depp's Ideas..
Pirates of the Caribbean The quirky actor's highly acclaimed performance as the pirate Jack Sparrow in the 2003 film was a product of Depp's own creativity. "I was reading about the 118th century pirates and thought they were kind of like rock stars," he tells The Los Angeles Times. "So, when I thought, 'Who is the greatest rock 'n' roll star of all time?" Keith Richards of The Rolling Stones!