Who voiced Shrek?

Who voices Woody in the 'Toy Story' films? Who voices Buzz Lightyear in the original 'Toy Story' films? Who voiced the Genie in Disney's 'Aladdin' (1992)? Who voiced Donkey in 'Shrek'? Who voiced Mufasa in the 1994 animated 'The Lion King'? Who provided the voice of Darth Vader in the original 'Star Wars' trilogy? Which studio produced 'Toy Story', the first fully computer-animated feature film? Which studio produced 'Shrek' (2001)?