Me, hearing Jason Lee's voice in my head while watching the graveyard scene from 'Harry Potter and the Goblet of Fire':
"Hey, Harry--did you see how I made the Triwizard cup a PORTKEY, so that I could trap your ass in this graveyard and AVADA KEDAVRA you big time? Am I brilliant, or what? Why, I can remember when I came up with this plan, back when I was all gnarled and helpless and fetal-like, and decided to make Kid Barty look like that one-eyed dude to totally trick everybody at Hogwarts, and..."
[Voldemort finally notices Harry plotting an escape from his self-congratulatory blather]
"Oh, ho ho! You sly dog! You got me monologuing!"