Harry Potter and the Deathly Hallows
How we cite our quotes:
"So it all comes down to this, doesn't it?" whispered Harry. "Does the wand in your hand know its last master was Disarmed? Because if it does… I am the true master of the Elder Wand."
A red-gold glow burst suddenly across the enchanted sky above them as an edge of dazzling sun appeared over the sill of the nearest window. The light hit both of their faces at the same time, so that Voldemort's was suddenly a flaming blur. Harry heard the high voice shriek as he too yelled his best hope to the heavens, pointing Draco's wand:
"Avada Kedavra!" "Expelliarmus!" (36.118-121)
Harry stays true to himself all the way to the end – he recognizes his own identity as the master of the Hallows, and pulls out his signature spell to prove it. Voldemort's own actions are classic Voldy; he thinks he can just blast Harry away and solve all his problems, but this single-minded attitude fails him here. (Hasn't he yet learned he can't use that spell on Harry, by the way? Sheesh.)