When Butch, having escaped from some rapists, decides to go back and save Marsellus from them. Even though Marsellus is a mob boss who was out to kill him less than a hour ago (and nothing guarantees that he won't keep trying to do the same afterwards).
Yolanda's panicking when Jules holds Ringo at gunpoint makes you realize just how much she cares about him. And when Jules allows them to leave peacefully, they both leave clutching each other like they're about to burst into tears.
