Wikipedia: Sean Penn
Biography for actor Sean Penn, covering films which he acted in or directed, memorable quotes, and his political activism in the U.S. and the Middle East.
Sean Penn in Iran
Actor Sean Penn documents his visit to Iran, as he talks to Iranians about their culture and their political desires. Site also features a photo gallery and video clips.
IMDb: Sean Penn
Sean Penn photos, filmography, and facts, including his famous roles in Dead Man Walking, Mystic River, and Fast Times at Ridgemont High.
Salon: Penned In
Q&A with Sean Penn about his personal life and his career.
About.com: Sean Penn
Links to online resources about Sean Penn, including reviews of Penn's films, interviews, and news stories about his anti-war activities.
HELLO! Profiles: Sean Penn
Article about Sean Penn, the Oscar-winning actor who starred in Fast Times at Ridgemont High and Mystic River. Also includes picture gallery and filmography.
Salon: Sam I Ain't
March 2002 article argues that Penn is one of the greatest actors of his generation.