Doubles as Actor Allusion in the English dub. Guess who voiced Alucard?
Amelia and Nama both fighting a dragon while Amelia is stuck inside Nama, and executing a Pacifist Crush together. It's awesome enough to make Zelgadis cry. And doubles as a heartwarming moment when you remember that Nama is really Amelia's long lost sister Gracia aka Naga.
It's more or less played for laughs, but in the first film, Naga shows off her intelligence by accurately analyzing the artificially enhanced hot-spring water and calling out the owners for their deception.
Episode 23 of NEXT,a mind controlled Gourry takes on the whole team plus Zangulus and nearly defeats them all with little effort, showing what the Sword of Light is really capable of when he absorbs a Dragon Slave and fires it back like it was nothing. It takes Lina's Ragna Blade clashing with the Sword of Light even bring the fight to a draw. This fight really goes to show just how freaking ''deadly'' Gourry could be.
Two examples; when fighting some berserkers in season 1, Gourry swings his steel sword at a berserker, but it dodges and the blade gets lodged in a tree trunk. Instead of trying to pull it out as the berserker comes up behind him, Gourry just pushes his blade through the entire tree trunk and cuts the berserker down.
In TRY, Gourry gives Valgarv a roundhouse kick Chuck Norris would be proud of, sending the mozaku-ancient dragon hybrid skidding back and making him stagger for a moment out of both pain and surprise.
Fan opinions vary on what each individual character's CMoA is, but it seems to be fan conensus that the climax of Slayers NEXT (particularly the Lord of Nightmares possessing Lina's body to destroy Hellmaster Phibrizo, and Gourry chasing her through the sky and literally into another dimension in a last-ditch attempt to bring Lina back) is the show's as a whole.
An awesome and funny moment from the first season of Slayers: After Zolf tries to attack Lina and Gourry by surprise, the two heroes make short work of his trolls by turning their healing powers against them with pebbles and a magic spell, causing them to disappear into nothingness. Right afterward, Lina prepares a spell to use against Zolf, sending him screaming and running away from the inn...from a harmless ball of light. The best mages learn to master the simple spells as well as the city-destroying ones ("DRAGON SLAVE!").
Another first season example: While fighting some mooks, Gourry swings his sword at one and misses, embedding the blade into a tree trunk. Rather than pulling the blade out to attack the mook creeping up behind him, Gourry simply pushes the blade right through the tree and cuts the mook in half, all in one motion, proving just how brutally strong this mostly normal human is in a world full of monsters and magic.
Of course, the very first time he uses the Sword of Light is one by default.
During the second half of Slayers Revolution episode 8, Xellos reminds us just how powerful he is.
Slayers Evolution-R: Xellos destroys the Assassin Zuuma in mere seconds, who gave Lina and co. such a hard time throughout the season. To be fair he was caught off guard.
Also, in Evolution-R episode 12 there's a very short but amazingly epic battle. The reason for this is both opponents being incredibly powerful. And the tongue.
Even Sylphiel gets her chance to shine in episode 25 of the first season, when she revives a nearly dead Lina by herself.
11 Nagas storming a castle in the first OVA. That is all.
How has the climax of NEXT not been mentioned yet? Lina has been spending the entire season doing everything she can not to use the Giga Slave after finding out that making a single, tiny mistake in the casting of it would destroy the universe, so naturally Hellmaster Fibrizzo has been spending the entire season trying to force her to use the Giga Slave so that he can make it go out of control. At this point, he's easily withstood two simultaneous Dragon Slaves, one of which was amplified, and Lina's second strongest spell, the Ragna Blade. When Fibrizzo is about to kill Gourry right before her eyes, however, Lina finally cracks and uses the Giga Slave... and her wish to save Gourry winds up being so strong and pure that it amplifies the spell to the point of actually summoning the Lord of Nightmares into Lina's body instead of just calling on her power. The Lord Of Nightmares proceeds to mop the floor with Fibrizzo with pretty much zero effort. After finding out that Lina has been absorbed into the chaos that makes up the Lord of Nightmares, Gourry chases her into another dimension, giving up the Sword of Light and pleading for Lina to come back to him, and just when it looks like she's gone for good the Lord of Nightmares recreates Lina right in Gourry's arms, and the two of them share their first kiss. They both return to reality holding each other and with no memory of what happened.