Arnold Schwarzennegger: "You are looking for Draco Malfoy? Oh. I let him go."
Julie Andrews: "Ughhhhh, my bosom! And this fake hair--and the beard! I can't take it, anymore!"
James Earl Jones: "I am your father!"
Roy Scheider: "We're going to need a bigger wand."
Flip Wilson: "Professor Snape made me do it!"
Jesse Ventura: "I'm gonna make you into a god-damned magical tyrannosaurus rex--just like me!"
Michael Clarke Duncan: "Will you stand before the fury of Voldemort's armies?"
And, finally, Ian McClellan: "You shall not pass!"