MOVIES EVERYONE SHOULD SEE IN THEIR LIFETIME

I suck at movies. Tell me which ones are good.
  1. The Philadelphia Story
    Suggested by   @rachelist
  2. Shadow of a Doubt
    Suggested by   @svevenstar
  3. The 39 Steps
    Suggested by   @svevenstar
  4. The Lives of Others
    Suggested by   @svevenstar
  5. Some Like It Hot
    Suggested by   @amarienew
  6. The Trouble With Angels
    Suggested by   @amarienew