"Pluto Saves The Day" is obviously one for Pluto, but you gotta give some props to Goofy for being the only staff member besides Pluto to see right through Pete's scheme...and he didn't even realize it! He still ends up taking a sleeping apple anyway, but it's still pretty awesome coming from Goofy.
Pete:(dressed up as Snow White and speaking in a bad falsetto) Oh, Goofy! I have a delicious apple for you.
Goofy: No thanks. Ma said never to take fruit from a stranger.
Pete: But I'm Snow White.
Goofy:(appropriately suspicious) Yeah? Then who's that? (points to the real Snow White sitting at her table)
Pete: Uh, well, y'know, uh...An apple a day keeps the doc away.
Goofy: But I like Doc. (holds up Doc)
Pete:(angry; normal tone) Just eat dis apple!
Goofy:(annoyed) Okay, Snow. Betcha Prince Charmin' never saw this side of ya before the kiss. (Pete shoves the apple into his mouth)
When Timon and Pumbaa are making faces in a spoon, Gaston shows up to say, "No one makes faces in spoons like Gaston!" Timon's response is nothing short of glorious.
"Actually, no one asked the opinion of Gaston."
Jafar and Iago conjuring the House back after it vanishes (it's a long story) to the tune of an epic rap cover of "Bibbidi, Bobbidi, Boo"!
Iago: (as Jafar stares, dumbfounded) WE'VE BEEN AGRABAMBOOZLED BY A MOUSE!
In Donald's Pumbaa Prank, Pete lures Donald into getting back at Mickey for cracking one too many jokes at him on April Fool's Day, by getting Pumbaa in an air vent on the roof with plans to stink everyone out of the club. Donald is in on this at first, at least until he realizes Mickey actually plans to give him a Lifetime Achievement Award. Donald then gets a serious expression, walks right past Mickey when he's handing him the reward and goes to the roof, telling Pete to get "Out of the way, Fatso!" and just shoves Pumbaa down the ventilation shaft and follows, resulting in Pumbaa declaring that Donald saved him, and Mickey adding that "Not only he is my pal, but he's a hero!", which makes it double as a Heartwarming Moment. It's unfortunately negated like a second later cause Pumbaa lets it slip that Donald was setting up the prank with Pete to begin with, but that was still pretty cool.
In "The Mouse Who Came to Dinner" everyone getting back at Mortimer by giving him a Celebrity Roast after he pretended to be a critic(which he used as a means to be an obnoxious Jerkass to everyone and threatened to give a bad review if he didn't get whatever he wanted)capped off by the actual critic-Lumiere literally "roasting" Mortimer.
"Mickey's Cabin" deserves a mention for Mickey outsmarting both Pete and his cousin Zeke and tricking both of them into turning themselves in to jail.
Minnie telling off Mortimer and punching him in "Mickey and the Goat Man".
"Mickey's Remedy" has Mickey tricking Donald's nephews into thinking that they have "Bolvanian Brain Fever" to teach them a lesson after they've taken advantage of his hospitality by Playing Sick. He goes as far as convincing them that they have died, and will go to "the bad place" unless they redeem themselves.
Mickey beating the crap out of Pete and getting him arrested in "Mickey's Mix Up"
Mickey and Minnie beating up Mortimer in "Mickey's Rival Returns"