Mr. Smith Goes To Washington

Frank Capra's Best Picture nominee about a wide-eyed patriotic bumpkin named Jefferson Smith (James Stewart), who's appointed to the Senate by corrupt politicos, chief among them and unbeknownst to Smith is a senior senator whom he idolized. Stewart was nominated for Best Actor and the film was up for a total of 10 Academy Awards. A TV series of the same name had a one-season run (1962-3).