Scooby Doo driving the Mystery Machine and escaping the flood from the dam was awesome on his behalf.
Plus, he later uses these driving skills to capture the monster, and right after that, he chases and pounces on the second criminal to capture him. It's one of the few times that Scooby captures the villains on purpose, and using real skills, instead of by accident and dumb luck.
When the fishman grabs Daphne, she kicks it in the face. She doesn't usually fight back at the monsters when they target her.