Who played Forrest Gump?

Who played the young Vito Corleone in 'The Godfather Part II'? Who played Travis Bickle in 'Taxi Driver'? Who played Hannibal Lecter in 'The Silence of the Lambs'? Who played Clarice Starling in 'The Silence of the Lambs'? Who played Rocky Balboa? Who played the Terminator in 'The Terminator' (1984)? Who played Indiana Jones? Who played Han Solo in the original 'Star Wars' trilogy?