In 'The Matrix', who plays Agent Smith?

In 'Indiana Jones and the Last Crusade', what are the characters searching for? In 'Raiders of the Lost Ark', what artifact are the characters searching for? What animal is Indiana Jones famously afraid of? Who played Indiana Jones's father in 'Indiana Jones and the Last Crusade'? Who plays Trinity in 'The Matrix'? In 'Gladiator', what is the name of Russell Crowe's character? In 'Gladiator', who plays the emperor Commodus? In 'Braveheart', which Scottish hero does Mel Gibson play?