Charly (1968)

An intellectually disabled man undergoes an experiment that gives him the intelligence of a genius.

Director: Ralph Nelson

Cast: Cliff Robertson, Claire Bloom, Lilia Skala, Leon Janney, Ruth White, Dick Van Patten, Edward McNally, Barney Martin, William Dwyer, Dan Morgan, Marianna Case, Leon Collins, Harry Cooper, Frank Dolan, Randee Lynne Jensen, Ralph Nelson, Donald Warnock