Who provided the voice of Darth Vader in the original 'Star Wars' trilogy?

Who voiced the Genie in Disney's 'Aladdin' (1992)? Who voiced Donkey in 'Shrek'? Who voiced Shrek? Who voiced Mufasa in the 1994 animated 'The Lion King'? Which studio produced 'Toy Story', the first fully computer-animated feature film? Which studio produced 'Shrek' (2001)? Which film was the first to win the Academy Award for Best Animated Feature? Which Studio Ghibli film won the Academy Award for Best Animated Feature in 2003?