A coupe from Conan the Barbarian
Warlord: "What is best in life? Conan!"
Conan: "To crush your enemies, see them driven before you, to hear the lamentation of the women"
Thulsa Doom: "What is steel compared to the hand that wields it?"
Ghostbusters
Peter Venkman: "We came, we saw, we kicked it's ass!"
And you can't have a thread about great lines from movies with out Rowdy Roddy Piper's line from the seminal alien infiltration and take over film "They Live"
I have come here to chew bubble gum and kick ass. And I'm all out of bubble gum.