So I’m thinking of some scene in either a movie or possibly a Joss Whedon show (I think).
The villain has the hero under guard, and also has someone important to the hero in his grasp. You can see that what the villain’s probably going to do is put this big dilemma before the hero — “I’ll free one of you, who will it be?” kind of thing — actually, you can tell that the villain is about to start this long monologue.
He gets out about five words — something like “Oh, what a choice I’m about to --”
And the hero (or heroine? not sure) interrupts and says “Me.” There’s a beat and they continue. “You were going to make me choose between him or me, right? I choose me.” And it just takes the wind out of the bad guy’s sails — he was clearly looking forward to the speech.
What the heck is that from?
Edit: Several drunken New Yorkers quickly informed me that it is, in fact, Zoe, cutting off Niska, in the Firefly episode War Stories (the details of the scene were also a bit different). They then mocked me for not remembering it.