And this gem:
Superman: He used a bowline knot.
Green Arrow: A what?
Superman: A bowline knot—to the tie the other end of the noose to the door. They call it a bowline knot, though he added a Dutch marine twist.
Green Arrow: And you recognized that?
Superman: It's a common Boy Scout knot.
Green Arrow: (internal monologue) I love him and hate him in the very same breath.