I love old movies. Here are 15 great ones. Watch these and you will love old movies too! Most are available on internet archive. I could probably add another 85 to this list.

• Lawrence of Arabia (1962)
• All About Eve (1950)
• The Apartment (1960)
• What Ever Happened to Baby Jane (1962)
• Sunset Boulevard (1950)
• Witness for the Prosecution (1957)
• The Maltese Falcon (1941)
• Rear Window (1954)
• Laura (1944)
• Rope (1948)
• To Have and Have Not (1944)
• Key Largo (1948)
• Lifeboat (1944)
• The Letter (1940)
• Now Voyager (1942)

Edit: bonus movie

• Gold Diggers of 1933 (1933)