In "Donald's Pumbaa Prank", Donald rescues Pumbaa when Pete's stuffed him in the club's vent and is feeding him stinkbugs. Then, when it looks like Pumbaa's about to let loose a big fart and everyone has to evacuate, Donald bravely rushes out of the house with Pumbaa and takes the blow for everyone.
In "Everybody Loves Mickey", Mortimer is doing an open-mic performance that consists of him saying nasty things about Mickey. Donald steps up on stage, tells the big rat "You can't talk about my friend Mickey that way!", and then throws him off the stage. Needless to say, he pretty much deserved the applause he got for that.
In the House of Mouse Halloween special, Disney villains everywhere got one when they all teamed up to throw Mickey and Minnie out on the street, take over the House of Mouse, and turn it into their own personal nightclub. And they did it in song.
And the Mouse himself turns it back around in the climax by showing up in full Sorceror's Apprentice garb for a magical duel with Jafar. Just when all looks lost, Aladdin shows up with the lamp and Mickey imprisons Jafar within it.
In the final episode, Captain Crandall's seemingly-imaginary superpowers actually show up right when the Gauntlet is thinking he has killed him and his teammates. Crandall then defeats the Gauntlet by shielding himself against an energy blast until the villain's power runs out.