The most recent one I saw was in the t.v. series, Rome, I forget the episode. Some stuffy Roman numpty, in the act of being run through with a sword says, in a mildly put-out tone, "Sir - I really must protest..." and then dies. Made me groan and laugh at the same time (graugh?). It's not really expositional, though (except in demonstrating the upper-class Roman faith in law and decorum, perhaps), so probably doesn't count here.
Luckily, there's always the old standby, "No! No! Not the teeth!" Or whatever it was.