Leonardo DiCaprio just finished up Shutter Island,
his fourth film with Martin Scorsese. Leo says working with Scorsese is like attending school. The director asks the cast to watch "a vast number of films before working on a new project because the filmmaker is so insistent on thorough research."
"We watch a lot of films for lighting and mood tone, a lot of obscure movies," Leo said. "I remember for 'The Aviator' we watched 'House of Wax' ..."