A small one, but Rito standing up to Zastin and his two bodyguards for Lala's sake in the inital chapter of the original series was pretty cool, for an average teenage boy who can't even hold a conversation with a pretty girl..
Lala once drove a typhoon away from Japan. BY YELLING AT IT!!!
When Yami and Nana are trapped by the evil alien plants, Momo enters in "scary" mode. One of the plants tries to attack Momo, but she throws it to the ground and pins it down. Momo then pulls out a syringe, and injects something she calls "Insulin Alpha" into the plant. She then explains to the other plants that the solution will cause the plant to decay from the roots up. Momo then asks which one of them wants to go next: the plants think she is a demon and run off, letting go of Yami and Nana.
In the ending of the first series Rito saves both Lala and Haruna from a blob monster. Afterwards, Lala saves him while Yami becomes a mermaid and hammers the monster's central body.
Darkness
Several pervert incidents that happen to Rito are so incredible to qualify as awesome.
One incident involving a rogue vacuum cleaner ends up actually burying him under a pile of naked girls.
In chapter 75 he strips Haruna in 1 second!. Even Mea and Nemesis are surprised of how his skill has improved.
In chapter 17 of Darkness, Momo gets one when her Knight Templar white-knighting fan club that's been continuously striving to "defend her purity" through absolutely ludicrously overprotective methods get the idea into their collective heads that Rito is everything Yui's claimed about him in the morals committee meetings, and, furthermore that he's been ritually violating Momo and intends to do so at school. In reality, Momo has snuck off to meet with Rito to try and mess around with him again, and after nothing happens once again, the fan club barges in and begins assaulting Rito. What follows is an epic verbal smackdown, followed by one of the most amazingly terrifyingdeath glares of all times, all of which is so incredibly satisfying to watch after the many chapters of abuse Rito has suffered whenever caught in a remotely sexual accidental situation. What makes it even better is that it's the first time anybody has ever been called out on beating up Rito because they thought he was a pervert.
Lala's fight against "Darkness" Yami. Lala had fought Yami before and the match was pretty even. Now Yami is even stronger and Lala is still able to hold her own (while everyone else got taken down pretty quickly) and protect Rito. Her true moment of awesome is when she is able to counter Yami's massive energy attack. This same energy attack was strong enough to split a planet in half (Mea later points out that the attack was strong enough to destroy the Earth 2-3 times over). Lala goes beyond her limits (and becomes a kid) and is able to block it. She isn't the daughter to the Emperor of the Milky Way Galaxy for nothing.
Rito forces himself to act as a pervert to stop "Darkness" Yami. Special mention is that he stops himself from accidentally falling on her, as usual.
The Deviluke sisters' mother has managed to turn the Principal, that unrepentant pervert, into a pure and kind being with merely a couple of words.
The fight between Nemesis and a returned-to-full-power Gid is all kinds of awesome.
Lately Rito has proven himself to the monarchs of Deviluke to be not just a nice guy who's Made of Iron and has got a strange "gift" of falling on girls' private parts. First, with Queen Sephie, he is not affected at all by seeing her unveiled face, which (due to a trait of her race) normally causes males of any species to lose reason and lust after her; the only other person to ever be unaffected by that is Gid. And speaking of the latter, when Rito decides to save Nemesis's life by accepting her in his body after Gid has defeated her, he stands up to Gid while showing not the smallest fear of him, the guy who has just defeated Nemesis effortlessly. He's been making strong steps towards stopping to be just The Chew Toy.
Chapter 72 has a fairly extended one for Yami. She transforms into her Darkness form and destroys Kuro's (supposedly indestructible) orichalicum gun Hades with an attack called Planetary Slicer. Without damaging anything else, including Kuro. She then reveals she transformed of her own free will, and was completely in control the entire time.
Other
The entire gameplay of the To Love-RuPlayStation Vita game. Seeing Rito pulling off insane stunts while mowing down an entire army is just awesome. Even better when you're playing as Riko.
, Momo gets one when her Knight Templar white-knighting fan club that's been continuously striving to "defend her purity" through absolutely ludicrously overprotective methods get the idea into their collective heads that Rito is everything Yui's claimed about him in the morals committee meetings, and, furthermore that he's been ritually violating Momo and intends to do so at school. In reality, Momo has snuck off to meet with Rito to try and mess around with him again, and after nothing happens once again, the fan club barges in and begins assaulting Rito. What follows is an epic verbal smackdown, followed by one of the most amazingly terrifying