Jacob Benjamin 'Jake' Gyllenhaal (born December 19, 1980) is an American actor. The son of director Stephen Gyllenhaal and screenwriter Naomi Foner, Gyllenhaal began acting at the age of ten. Following his first lead role in 1999's October Sky, he starred in the indie cult hit Donnie Darko (2001), in which he played a psychologically troubled teenager alongside his older sister, actress Maggie Gyllenhaal. In 2002, he starred in another indie film named The Good Girl alongside actress Jennifer Aniston. In 2004, he appeared in the science-fiction film The Day After Tomorrow, portraying a student caught in a cataclysmic global cooling event. He then played against type as a frustrated Marine in Jarhead (2005). The same year, his role as Jack Twist in Brokeback Mountain earned him critical acclaim and an Academy Award nomination for Best Supporting Actor.
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