Daphne in the first live action movie, when she takes out The Dragon Zarkos, a masked wrestler, with her bare hands. Let me say that again... Daphne. Takes out the fucking dragon. With her bare hands. (Shouldn't be surprised - she is played by Buffy Summers after all!)
Daphne: Now who's the damsel in distress?
Zarkos: (Whimpering) M-Me?
- Said movie also features a spectacular Take That, Scrappy! in the form of Scooby punching Scrappy (who was, mind you, the Big Bad, and practically asking for it after trying to kill his uncle).