MST3K Ep. 415 - "The Beatniks"
(Short: General Hospital, second installment) A leader of a gang of delinquent teens is heard singing along with a jukebox at a greasy spoon and gets the chance to be a star.
His gang, resentful of his success, threaten to ruin his career. The General Hospital installment involves a ridiculously tense celebration at a nurse's house. Catchphrase: I killed that fat barkeep!