Being a movie fan, it could be a long list, but I will try to stop at the essentials that have had some impact for me.
Jules & Jim - F.Truffaut
Night effect - F. Truffaut
A man, a woman - C. Lelouch
Last tango in Paris - B.Bertolucci
Novecento - B.Bertolucci
Medea - Pier Paolo Pasolini
It's a wonderful life - F. Capra
Pocketful of Miracles - F. Capra
Frankenstein Junior - Mel Brooks
Spies like us - J.Landis
Jackie Brown - Quentin Tarantino
Pulp Fiction - Q. Tarantino
Smoke - W. Wang
Blue in the face - W. Wang
The Commitments - Alan Parker
Trainspotting - D. Boyle
The lives of others - german director, I don't remember the name
Paris, Texas - W.Wenders
Wings of Desire - W. Wenders