Finally, after giving Cooler such a beatdown and collapsing from his Fifth Form, Vegeta didn't let him talk but cut him into pieces with a ki blade and disintegrated his body. Except for the head, that he kept as a trophy.
King Cold beating down two Super Saiyans in his Fourth Form.
The consequences of Goku's victory are even more awesome: the people of Namek, previously enslaved by Slug, recover their hope and clean the clock with those of Slug's soldiers who still want to fight, with Slug dead Namek's Dragon Balls are available again as soon as Dende can resurrect Porunga, and in the otherworld Kami, Piccolo and the recently dead Elder Moori have found a way to restore all the damage the Androids did to Earth.
Vegeta, incompletely healed from his earlier fight with Cell, and Trunks, who has just achieved his ASSJ form, against Cell. And, thanks to good tactics and the Brave Sword, hand him his ass.
One for Cell too, for still finding a way to survive this one.
One of the first things Perfect Cell does is an attempt to replicate Goku's Instant Transmission. He fails, but manages to devise a way to fly faster than light.
Later, he enjoys the sight of a star six times heavier and two thousand times more powerful than the sun... By standing in space at a million miles from it and looking directly at the sun. And then tops it by walking directly into the star's heart and coming out unscathed. Thinking of himself that he was above gods may be a bit blasphemous, but after pulling that who wouldn't think it?
And then, in a fit of anger, he destroys the star.
An inspection in Gero's lab is a moment of awesomeness for the late scientist when Bulma discovers what powers the infinite energy Androids, with a process that starts by creating a completely new element (Element 138, predicted by current science but still undiscovered and unsynthetized). Even Bulma is in awe at it.
After fusing with Kami, Piccolo inflicting an utter and absolute Curb-Stomp Battle to Present!Slug.
Vegeta and C47 ruining Paragus' plan by simply not caring for anything he has to say.
Broly versus Vegeta. All of it, but especially the ending: overwhelmed by Vegeta after the prince unlocked SSJ2 but still dominated by Paragus' conditioning, Broly caused the local star to go supernova in an attempt at killing him. Vegeta knocked down Broly and pushed back the supernova blast, protecting the planet and the ships of his fleet that had been unable to escape.
During the battle a frustrated Broly fires his Eraser Cannon at the Bringer of Death. The ship survives undamaged, thanks to Android 16, now the ship's AI, using a temporary slipstream to make the attack pass through the ship. And they can do it again at will. A trick that saves them even when Broly makes the local star go supernova, even if that one causes damage.
C47 also had his moment to shine: when Broly had the upper hand and was about to kill Vegeta, C47 came down and managed to hurt Broly, keeping him down long enough that Vegeta went SSJ2. It completely depleted his power core, but it still did something Vegeta had been unable to do before him.
Finally, the end result of Vegeta's victory: Broly pulling a Heel–Face Turn.
When Trunks get the upper hand Cell Jr. starts targeting the public, driving Goku to intervene. Cell interferes to keep it one-on-one... And Goku manipulates him into turning it into a team battle, knowing that Trunks can take down Cell Jr. and join him against Cell proper. And the best part is that Cell knows what Goku is doing yet can't help but accepting Goku's idea.
The tag battle.
The start has Goku and Cell awe Trunks and Cell Jr. into not fighting. And they aren't being serious.
When they start getting serious, Goku asks Trunks to get rid of Cell Jr. fast and come to help. Trunks, going USSJ an instant before hitting his opponent, kills Cell Jr. with two shots.
Even two against one, Goku and Trunks are getting overwhelmed... Right until Goku manages to lure Cell in the perfect spot to get skewered by the Brave Sword and completes the tactic with an attack tailor-made to disintegrate Cell.
SSJ2 Gohan's casual killing of both Raditz Jr. (now stronger than even Cell Jr. had been) and Frieza Jr. amd utter humiliation of Cell. In fact, Gohan hit Cell so hard that he damaged his regeneration ability.
Yamcha, of all people, manages to shine by saving the spectators when Cell (accidentally) brings down part of the stands.
Later, when the clash between Gohan and Super Perfect Cell endangers them, Yamcha saves even Mr. Satan and Jimmy Firecracker.
After the beating suffered at Gohan's hands, Cell realizes he can still power himself up a bit by absorbing Android!Krillin. This backfires horribly: between Cell having been designed to absorb only two androids and Krillin having been a ki user even before transformation, our monk manages to fight back from inside Cell before escaping with Android 18 in tow, leading to Cell regressing to Semi-Perfect form. This is followed by a very satisfying scene of Krillin beating up Cell.
Utterly defeated, Cell decides to blow himself up. As in canon, Goku teleports him away... But this time nobody dies: Goku homed in on Piccolo and teleported Cell on the indestructible Namek, and them teleports back to Earth with Piccolo in tow.
And then it turns out that Cell knew he would survive the self-destruction and regenerate back to Perfect form and with a zenkai to boot...
Vegeta's triumphant return to Earth. Especially for how he pulled it: he made his own version of the Instant Transmission from simple observation, something that Cell had utterly failed to do. Granted, it took him going SSJ2 to finally pull it off, but he still did something that should have been impossible.
The sheer awesomeness of Shenron's power. He cannot repair the magic of the Brave Sword, but can bring back all of Cell's victims aside for Goku and Vegeta and repair everything Cell has destroyed... Including 18 and Krillin's damaged circuits, Mars, and an entire solar system. The latter of which as a side effect of the wish, as nobody on Earth knew Cell had destroyed it.
In chapter 79, King Kai verbally owns Vegeta.
When they meet again in Hell, Frieza still knows he can't beat Vegeta in combat so resolves to drive him mad with careful insults and his knowledge of what makes Vegeta tick. The end result, however, is that Vegeta drives Frieza mad by simply not caring of what he's saying and pointing out that the Arcosians are extincts while he has a son that will continue his legacy.
Goku's cathartic No-Holds-Barred Beatdown of Cell in Hell. Sure, Cell couldn't use his full strenght, but it didn't make it any less satisfying.
While Goku and Vegeta are fighting Cell and Frieza respectively, Pikkon goes dealing with their accomplices in the attempt to break out of Hell. They don't even see him coming-and their numbers include Gero, Cooler, and Frieza jr. and Raditz jr.. And the guys listed above were taken down at the same time.
There are magicks in Hell weakening the powerful inmates and preventing them from getting out even if they find the exit, and Vegeta, due his many crimes, is affected to them and can't leave Hell. He does it anyway. What's better, he doesn't do it by might (he tried that and failed), but by accepting his Character Development.
Cell getting out of Hell.
The destruction of Cell's soul is one for Pikkon: Cell being Cell he was ready for an Instant Transmission the moment he had a chance, but Pikkon (who is weaker than him) blocked it, keeping him in place long enough for Goku and Vegeta to finish him off for good.
The fact that these Authors, despite their jobs and responsibilities, manage to pump out a lengthy, high quality and well-written chapter each week is nothing short of astounding. These guys deserve a medal.