Jacob Benjamin \"Jake\" Gyllenhaal 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 October Sky, he starred in the indie cult hit Donnie Darko, in which he played a psychologically troubled teenager alongside his older sister, Maggie Gyllenhaal. In 2002, he starred in another indie film, The Good Girl. In 2004, he appeared in the science-fiction film The Day After Tomorrow, portraying a student caught in a cataclysmic global cooling event.\nGyllenhaal played a frustrated Marine in Jarhead, and the same year, his role as Jack Twist in Brokeback Mountain earned him critical acclaim. For his Brokeback Mountain performance, he won the BAFTA Award for Best Supporting Actor and was nominated for the Academy Award in the same category. He has since played lead roles in many notable films, including Zodiac, Prince of Persia: The Sands of Time, Love & Other Drugs, Source Code, End of Watch, Prisoners, and Nightcrawler.