As a writer you should appreciate movies from every era.
- Casablanca (1942)
- Citizen kane (1941)
- Wizard Of Oz (1939)
- Gone with the Wind. (1939)
- Psycho (1960)
- Dr. Strangelove: How I Learned to Stop Worrying and Love the Bomb (1964)
- Invasion of the Body Snatchers (1956)
- On the waterfront (1954)
- Metropolis (1926)
- Touch of Evil (1958)
But these will go a long way in educating you in the art of movie making at its best.