Ralph Nelson
Elseen Leo Ralph Nelson (August 12, 1916 – December 21, 1987) was an American movie and television director, producer, writer, and actor. Description above from the Wikipedia article Ralph Nelson, licensed under CC-BY-SA, full list of contributors on Wikipedia.
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Racial tensions threaten to explode when a black man is elected Sheriff of a small, racially divided town in the deep south.
Charly
A less than ordinary man is turned into a genius. He awakens to an exquisite love experience, but at an impossible price for CHARLY....
Duel at Diablo
In Apache territory, a supply Army column heads for the next fort, an ex-scout searches for the killer of his Indian wife, and a housewife abandons her husband in order to rejoin her Apache lover's tribe.
Lilies of the Field
An unemployed construction worker heading out west stops at a remote farm in the desert to get water when his car overheats. The farm is being worked by a group of East European Catholic nuns, headed by the strict mother superior, who believes the man has been sent by God to build a much needed church in the desert.