I’m up for OGIC’s challenge (see above), so here goes nothing. I should add that I drew up my list before I saw hers:
1. “I was misinformed.” (Casablanca)
2. “Build my gallows high, baby.” (Out of the Past)
3. “You were a very apt pupil!” (Vertigo)
4. “Closer than that, Walter.” (Double Indemnity)
5. “Men are all either dates, potential dates, or date substitutes.” (Metropolitan)