James Dean was an American actor who became a cultural icon of teenage disillusionment in the 1950s. He is best known for his roles in classic films such as Rebel Without a Cause, East of Eden, and Giant, which showcased his intense performances and brooding persona. Despite his brief career, Dean's impact on cinema and popular culture was profound. He became a symbol of youthful rebellion and is often remembered for his tragic death in a car accident at the age of 24, which only added to his legendary status.