5. Gone With The Wind (1939)
Scarlett and Rhett Butler (Vivien Leigh and Clark Gable)
Goddamn, Clark Gable, get a room with everyone! I probably don't have to tell you much about this one.
You know it's fan-yourself-hot when Rhett Butler tells a defiant Scarlett, "Frankly my dear, I don't give a damn," proving that the stronger the woman, the more she likely needs a guy who will call her on her own bullsh*t once in a while.
Though, for my money, the best Butler line is, "No, I don't think I will kiss you, although you need kissing, badly. That's what's wrong with you. You should be kissed and often, and by someone who knows how."
P.S.: Technically, this one is in color, but in the still black-and-white era of 1939, that was a big deal.