Which American actor is known for films such as 'Mystic River', 'I am Sam', '21 Grams', 'Milk' and not least 'Dead Man Walking'?

Explanation

Sean Penn had his breakthrough with the film 'Fast Times at Ridgemont High' in 1982 and quickly became a star. He is known for films such as 'Mystic River', I Am Sam', '21 Grams', 'Milk' and not least 'Dead Man Walking', for which Penn received his first Oscar nomination. The film was directed by Penn's close friend Tim Robbins. Sean Penn has also enjoyed success behind the camera. In 2007, he wrote and directed the authentic story about the boy Supertramp, who travelled around North America in the film 'Into The Wild'.