How Stan gets Francine to realize that Roger is a selfish jerkass during the first half of "Frannie 911" when earlier in the episode, Francine did nothing but defended the latter from any sort of well deserved retribution. This soon gives Francine one, as she no longer puts up with Roger's crap (by both smacking him verbally and physically) and forces him to be nicer. Sure, things went back to normal at the end, but the final scene of Francine allowing Stan to beat down on Roger whenever he deserves it is icing on the cake.
In "Hurricane!", when Stan decides not to evacuate, his whole family calls him out, citing he always makes bad decisions in bad situations.
Well, except for Hayley, whose one moment of supporting her dad led to her getting mauled by a shark. She then promptly changed her opinion.
The first true CMoA in the series comes at the end of the episode "Bullocks to Stan", where Stan engages in a fight with Deputy Director Bullock for calling his daughter a "cheap slut".
Stan, for all he mistreats his family, has shown his willingness to take the bullet for them on a surprisingly frequent basis. He took a sniper attack on Hayley in "Stannie Get Your Gun" and pushed Francine out of the way of a falling statue in "Finances With Wolves". Of course Status Quo ensures Stan comes out okay, but the implication's still there.
Also Stan's plan to save Roger from an autopsy in "Office Spaceman".
Roger: He switched the gas. Son of a bitch "Superman II'd" me!"
Stan — who is a fountain of these, despite the fact that he borders on being a Villain Protagonist in some episodes — spends the early parts of an episode digging through the foundations of the house searching for Oliver North's hidden gold cache while everyone is calling him insane. Stan's moment comes when Francine is doing an interview with reporters/neighbors Greg and Terry in the kitchen; while she's saying how insane Stan is and the Greg and Terry are calling Stan an idiot, Stan walks in carrying a chest. Stan drops it on the table, opens it up to reveal Ollie North's gold — which instantly shuts everyone up — then puts the cherry on top by flipping off everyone as he walks out of the room.
And then he sticks his head back into the room and flips them off again for good measure.
Stan beating the hell out of a meter maid, because...well, let's face facts, it's something we've all wanted to do.
Stan saves Francine from the Anti Christ and then pulls a Heroic Sacrifice to save Jesus himself.
"Return of the Bling": Stan snatches the gold medal from Roger's hands and yells, "You lying, thieving cheater! You're gonna get what you deserve!" followed by chucking Roger in a pit of ugly, horny British girls.
Though "Less Money, Mo Problems" is meant to demonstrate Stan's complete inability to live on minimum wage, there is something admittedly awesome about him managing to single handedly treat his wounds after being ran down by a car driven by Roger.
While telling Roger he'd have to kill either him or Jeff if Jeff ever discovered he was an alien, Roger ascertains that Stan couldn't do it, because he loves him. Stan's response? To choke him to death with an utterly bored look on his face, drop him, and revive him with CPR.
Francine's musical number in "Stan of Arabia", in which she manages to rhyme "labia" with "Arabia" and break many Muslim laws by singing and appearing in skimpy clothes.
In The Scarlett Getter, Stan realizes his former fantasy girl is actually an alien hunter who's been using Stan to get to Roger. As she's tying Stan up and calling him a loser, Stan tells her that she's trash and not worth the trouble he went through to get her, reminding himself that Francine is more of a woman then Scarlett will ever be.
In "Son of Stan", Stan clones Steve to prove his strict parenting methods are better than Francine's lenient methodology; Francine's Steve (the real Steve) becomes a disrespectful, lazy brat (while Stan's Steve becomes a crazed lunatic). When Steve mouths off to his parents even after they save him, Francine decides she's had enough; she slaps Steve twice, then tells him to do what she says or...
I'll shove you back up my clownhole, birth you again, and name you my bitch, NOW GET OUT OF THAT CAGE!
From the "Hurricane!", blink and you'll miss it, but when the family finds Hayley after she was wounded by the shark, Francine makes a truly impressive display of physical strength by hefting her teenage daughter, whom it should be noted is about the same size as she is, into her arms and carrying her back to where the rest of them are.
The fight between Francine and Toshi's mother in "Spelling Bee My Baby".
In "White Rice" Stan tries to sabotage Francine's return to her former career as a stand-up comic who specialized in telling Asian jokes by making her nervous before performing in front of some TV executives. Sure enough, Francine barely says a complete sentence before she vomits on stage. Stan waits for her to come home with a banner saying the dishes are in the sink. Francine says that the Fox network ordered six episodes for her own sitcom and she's leaving for Hollywood. If Stan had stayed he would've known that Francine turned the incident around to make a bunch of jokes about Mongolian barbecue.
In "Bully for Steve", after discovering that Stan has been bullying Steve in another misguided attempt to man him up, she chases him throughout the school and it escalates into a car chase that ends with her crashing Stan into a tree. It just goes to show you, even if you're her husband, do NOT mess with her Steven.
Steve beating the living shit out of Beauregard, a greyhound-riding half-man, after the latter unleashed a barrage of insults about Stan.
Steve: Don't talk about my Dad that way! Just because he doesn't know everything doesn't [punch] mean [punch] he's [punch] stupid! [punch]
And then he proceeds to steal Beauregard's cash.
Steve gets two in Toy Whorey. The first when he successfully sets up an ambush in his room to stop Stan from taking away his toys, a laHome Alone, complete with a firecracker assault. Stan actually crawls out of Steve's room on his knees in fear. The second when he tricks the two guards holding them prisoner into playing make believe with them, at which point Steve locks them in the cell so he and Stan can escape.
In one episode, Stan and Steve are trying to get a door for Stan's project of building a DeLorean, and are competing with a Back to the Future fanboy, who steals the knob from Stan's gearshift. Steve climbs out onto the hood, leaps into the other guy's DeLorean, steals the knob back, and then jumps back to Stan's car, even flipping back down into the passenger's seat. All while a Suspiciously Similar version of the Back to the Future theme song plays. Stan himself calls the stunt awesome, and the smug look on Steve's face afterwards shows that he knows it.
Stan: Hey look at that, we're having a father-and-son moment.
Steve: Quit ruining it! (*cue nut punch*)
After all the jokes about how weak and wimpy Steve is, when the Smiths find out Roger is seeing another family behind their backs, he's so angry he flips over a table, tears a pillow in half, and jumps up to the ceiling and pulls down a chandelier!
When he thinks his girlfriend's campaign for student body president was sabotaged by Alpha Bitch Lisa Silver and her two friends, he goes off on a glorious Disproportionate Retribution spree to avenge Debbie by destroying Lisa and her friends. But it turns out it wasn't them.
In "Cops & Roger", the way that Roger kills the dirty cop. He climbs up a metal chain to escape said cop, and tries to elbow drop him, but WINDS UP MAKING HIS HEAD EXPLODE BY ACCIDENT!
Roger: That was unexpected.
In one episode, Roger falls face-first into some cocaine and then takes out an ENTIRE DRUG GANG.
Responding to Francine throwing him off a cliff in the most awesome way possible.
Bullock and Stan drive Jeff out to the woods to kill him under the pretense of going hunting. Stan, feeling pity, gets Bullock to agree to giving Jeff a ten-second headstart. Jeff instantly takes off to steal their car and leaves them stranded in the woods.
After being repeatedly robbed and beaten outside his own bedroom door by Roger in disguise (which Jeff never finds out), Jeff confronts the "mugger," first with a speech about how scum like him are responsible for making the streets (read: bedroom hallway) unsafe, then shooting him.
Also doubles as a CMOA because as Roger lays on the ground bleeding he pulls a gun at Jeff (who is unaware that the thief (Roger) is even alive.) and takes aim but instead of getting a shot at Jeff loses grip of the gun and it shots him in the knee and what Roger say's only adds to this.
Roger (Grunts in pain): That's a whoopsies.
In "Lost In Space" Jeff proves to Roger's people that true love does exist and Emperor Zing has been lying to his people. The result starts a rebellion.
Hayley does get a couple of moments even though her role on the show is downplayed.
In Roy Rogers McFreely, Hayley points that, as she is part of the counterculture and now Stan is opposed to Roger's ruling of his beloved system, Stan is now part of the counterculture himself and on the same side as Hayley. Stan actually agrees with her and the two team-up to form a substantial counterattack to Roger's changes in the neighborhood. She later saves Stan from Roger and makes Stan realize that Roger making Stan feel powerless is just how Stan makes Roger feel when they're at home.
When she realizes Snot has stolen a pair of her panties from Steve, Hayley bursts into his house and delivers a No-Holds-Barred Beatdown to get said panties back, just because they were lucky, and when you think about it, God only knows what Snot was doing with them.
When Roger and Stan try to hasten Hayley through the stages of acceptance because Jeff was abducted by Roger's race so she could referee their badminton game, Hayley points out at the end she had to accept it because they were the ones who got Jeff abducted in the first place, so she steals their shuttlecock and ruins their game. Understated, but still satisfying.
In Haylias, Stan turns to Klaus for advice about what to with Hayley now that he's activated her sleeper cell training. Though it's entirely one-sided as he's just interrupting Klaus as he's trying to read. Klaus finally gets fed up and calmly tells Stan this:
Klaus: I think you only turn to me when you have no one else to turn to. I think you really don't care what I have to say and you just like listening to yourself talk. I think you are a selfish bastard and I think you can go to Hell!
Stan (shocked): Wow. Okay. Uh, well I guess I'll ask someone else what-
Klaus: Yes, why don't you go do that.
In one episode, Roger attempts the Smoke Out and fails both times (falling asleep in the smoke cloud). Later on, Klaus (who Roger's been belittling throughout the episode) manages to do the Smoke Outright. A few seconds later an octopus-like monster appears and Klaus, sitting in a golden chalice, wearing a crown and wielding a sword, cuts his way out of its belly. He then tells Roger "I was gone sixty years! [...] I don't know [where I went] but wherever it was... I am their king now."
In Dr. Klaustus, Klaus airs all of the Smith Family's lies to help them work through them, as they've all been turning to Roger's psychiatrist persona "Dr. Penguin" who's been telling them to lie. Their problems include:
Stan has been have pre-dinner meals every day for ten years because Francine's cooking is awful, and has been feeding her meals to a pit of wolves built under the kitchen. And some of the wolves are in fact fourth generation.
Francine has been stealing fifty dollars from Stan's wallet every week to go to her "emergency fund", for drugs.
Steve has a girlfriend and has been telling her that Greg and Terry are his gay fathers because he's embarrassed of Stan and Francine.
Jeff can only think of Francine when he's having sex with Hayley because it's the only way he can get aroused.
Hayley has been playing ultimate Frisbee without Jeff because he's horrible at sports.
None of the family will listen to Klaus because they can't see past his fish exterior. After Roger realizes that the way to get the family to listen is by providing a mouthpiece, Roger gets into his Drill Sergeant Nasty persona "Sgt. Pepper", and barks them into submission and then orders them to work out their problems. Stan should just shut up and eat Francine's cooking, Francine should use her emergency fund for a cooking class, Steve should be lucky he has parents who love him, Hayley should dress up for Jeff because "hippies aren't sexy, they're dirty", and Jeff should exercise. Roger then orders them to thank Klaus because these are his ideas and he deserves the credit. The family then apologizes and honestly thanks Klaus for helping them. This is one of the nicest things Roger has ever done for Klaus, and it's a genuine Pet the Dog moment for Klaus (until he gets rewarded a hooker and the episode ends with him crying and eating chocolate while the hooker just files her nails in bed).
This was an amazing moment for Klaus, who's been neglected and ignored for years.
Toshi single-handedly takes out half a dozen serial killers to save Stan, Francine, and Roger.
In "Bully for Steve", Steve finds Stan's childhood bully on Facebook and has him beat Stan to a bloody pulp. The whole episode revolved around Stan teaching Steve to stand up for himself and not have other people fight his battles for him by bullying his own son; while Steve did resort to having someone fight his battle for him (which means he completely missed the point of Stan's lesson), Stan did have it coming, and boy, was that beatdown fun to watch.
Principal Lewis flip-flops from Fat Bastard, Fat Idiot, and Apathetic Teacher, or can usually be a mix of the three, but he earned some points when he broke a pot of coffee across Steve's face when Steve had punched a twelve year old girl with no provocation.
In the episode when Stan kidnaps Greg and Terry's infant daughter because he thinks gays won't make good parents. After kidnapping the children of a lesbian couple who tried to change make him see the error of his ways, the kids make him realize he's in the wrong. When he stops and hands the kids back over to their rightful parents and apologizes, Terry punches him in the face and puts out a restraining order against him.
The Chocodile scene when Stan is inside Roger's mind on "Brains, Brains, and Automobiles." Especially saying his Pre Ass Kicking One Liner "Oh HELL no" while smirking at Stan. Then the short yet cool beatdown begins.
From the very end of the episode "Son of Stan": "I'll see you in hell." *BANG*
In the fight in "Lost In Space", Sinbad holds his ground against the alien guards (at first) with nothing but a butcher knife. Sort of becomes a Heroic Sacrifice.
The initial test itself in "Lost In Space" is kickass in that it's set to the orgasmic music of Wax Fang's "Majestic" and sequenced fantastically with the song. However, the same test doubles as a heart-wrenching experience for Jeff.
Speaking of which, they actually got Wax Fang to perform the song for the sequence, as opposed to just paying to use the album version.