Margaret Hamilton as The Wicked Witch of the West in 'The Wizard of Oz'

Ah, yes. The original movie villainess. How many of you can honestly say that Margaret's evil cackle didn't haunt your nightmares as a child? Plus she had that amazingly catchy line that's still in the pop culture lexicon over 70 years later. That's right. "I'll get you, my pretty. And your little dog, too!"