Richard Roundtree, best known for his role as detective John Shaft in the 1971 film "Shaft," has passed away at the age of 81. His manager, Patrick McMinn, confirmed his death, saying he had been battling pancreatic cancer. Roundtree's career in film and television spanned over 50 years, and his work was a turning point for African American leading men in film. He is survived by his wife and two children.