The Day the Earth Stood Still 1951

Synopsis:

An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.

Directed by: Robert Wise
Runtime: 92 minutes
Critics score:
Tagline: From out of space... A warning and an ultimatum
Cast:
Michael Rennie
Michael Rennie
Klaatu, alias Mr. Carpenter 
Patricia Neal
Patricia Neal
Helen Benson 
Billy Gray
Billy Gray
Bobby Benson 
Sam Jaffe
Sam Jaffe
Prof. Jacob Barnhardt 
Hugh Marlowe
Hugh Marlowe
Tom Stevens 
Lock Martin
Lock Martin
Gort