4. Twelve Angry Men
What It Is: A 1957 courtroom drama, taking place almost entirely in the juror's room. None of the characters are given names, being referred to only as "Juror number 9" and such. The twelve men are about to deliver a "Guilty" verdict for the defendant (a young man in an impoverished neighborhood, who's been accused of murdering his father). But then, one of the jurors has a change of heart, asking the other eleven to review the evidence once more, just so they can be sure of guilt before sending the boy to a death sentence. One by one, the jurors change their votes to "Not Guilty", along the way revealing prejudices they had which originally influenced their "Guilty" vote. It was released to critical acclaim, and was nominated for three Academy Awards, specifically Best Picture, Best Director, and Best Adapted Screenplay.
Why A Remake Wouldn't Work: The laws have changed. A jury today must consist of a wide variety of people, genders, races, and economic background. Having this variety would completely negate several major themes of the movie, in particular racism and social prejudice.
The Only Way It Could Work: It would have to be set around the same time period as the original. Keep it truly being a room of 12 Angry Men (actually, twelve angry white middle-aged middle-class men).