Career: At 19, Penn began studying acting, and made early TV appearances in Barnaby Jones and Little House on the Prairie. His first film was Taps in 1981. He stole the show in Fast Times at Ridgemont High and At Close Range. Since then, he's starred in Casualties of War, Carlito's Way, Dead Man Walking, I Am Sam, Mystic River, 21 Grams, The Assassination of Richard Nixon, Milk, Fair Game and Gangster Squad. He won Best Actor Oscars for Mystic River and Milk. He has also written, directed, and produced several movies, including Into the Wild. Penn also actively supports a number of political and social causes. He called for George W Bush to be impeached after the 2003 invasion of Iraq.

Career: Cooper's first acting role was a small part in an episode of Sex and the City in 1999. He made his film debut in Wet Hot American Summer (2001) and his first break came the same year when he was cast as Will Tippin in TV drama Alias, a role he would play over five seasons. He went on to work regularly in a number of TV shows and films until his biggest break came in 2009 when The Hangover was a huge box-office hit around the world. This opened the door to roles in higher-profile Hollywood films such as The A-Team (2010), two Hangover sequels, Limitless (2011), The Place Beyond the Pines (2012), Silver Linings Playbook (2012) and American Hustle (2013). Following the success of Guardians of the Galaxy, in which he voiced Rocket Raccoon, his most recent triumph is Clint Eastwood's blockbuster, American Sniper.