12 Angry Men (1957)

In director Sidney Lumet's excellent courtroom drama:

• the dramatic debate scenes within a swelteringly-hot New York City jury room among twelve jurors
• the sequence of their preliminary vote on the fate of a Puerto Rican boy charged with first degree murder - when rational Juror # 8 (Henry Fonda) was the only one to vote not guilty and Juror # 10 (Ed Begley) muttered: "Boy oh boy, there's always one"
• the discussion about the switchblades when Juror # 8 plunged a switchblade knife (identical to the murder weapon) into the juror's long table to destroy the basis of the prosecution's case and cast doubt in the jurors' minds
• the angry outbursts toward the film's end by Juror # 3 (Lee J. Cobb) and Juror # 8's questioning of his personal attitudes: "Are you his executioner?"