Gomez, Morticia, Fester, and Grandmama holding their own against an angry mob in the opening scene.
Wednesday getting payback on Bethany by bringing all the frogs (meant for dissection) in the classroom to life to scare the other students. Even Parker calls it "totally awesome."
Before that, Wednesday makes it clear that she isn't the slightest bit intimidated by Bethany's Alpha Bitch theatrics, and subtly warns the bully to back off by borrowing a familiar Badass Boast.
Wednesday leading Ichabod to save her family from being crushed by their roof.
Pugsley utilizing his explosives against Margaux's catapult.
In fact, Pugsley's usage of his explosives-based rendition of the Mazurka to blast the various boulders that Margaux is firing at their house, protecting his relatives from harm in the process and his near-success at leading them to safety should count as a CMOA! The fact that the rest of the Addams clan judges him a man for this also qualifies it as heartwarming.
Parker: Actually, Mom, everyone can hear you. You've been live this whole time! 3 million people are watching you right now. The real you, for a change.
The film concludes with a loving sendup by giving a shot-for-shot recreation of the intro of the original TV show!