09/10/2011 at 10:00 PM EDT
Cliff Robertson, who won an Academy Award for playing a mentally disabled man in Charly and more recently appeared in the Spider-Man films, died Saturday at age 88.
The versatile actor of stage, television and movies died of natural causes at Stony Brook University Medical Center on Long Island, according to his longtime personal secretary Evelyn Christel.
A successful actor throughout the 1950s, Robertson had his first memorable role in 1963 as a young John F. Kennedy in the World War II drama PT 109, made while Kennedy was president.
In 1968, he won the best actor Oscar for Charly, a movie based on the short story Flowers for Algernon, reprising a part he originally played for television.
He gained renewed attention as Tobey Maguire's kindly Uncle Ben Parker in the original Spider-Man and two sequels.