Goku points out how Vegeta practically used The Power of Love to momentarily surpass even him, after Beerus slaps Bulma.
To put this in perspective, Vegeta getting beaten to near-death and generally being used as a chewtoy by Kid Buu—likely the greatest humiliation he's ever endured—never pushed him that far. Lay a hand on Bulma, and Vegeta summons up enough berserker fury to deliver a flawless twenty-second beatdown to a being who could defeat him with a halfhearted finger poke. Say what you will about Vegeta, but don't evertouch his family.
The fact that the writers let fan favorite Vegeta have that moment after he's been stuck in Butt-MonkeyCan't Catch Up land for so long. And after the bingo dance.
Even if it was for only one moment, Vegeta finally got what he always wanted: To be better than Goku. And he did it because he wanted to protect his family.
It also shows how far he's come from the callous world-murderer of his Planet Trade Organization days, which in and of itself is another layer of heartwarming.
From "servant woman" to "that's my BULMAAAA!!!!"
Dende comments on Vegeta's worth as a person. Remember that Vegeta murdered a village of his people. Dende has long since forgiven someone he has every reason to hate.
On that note, after Dende's comments, the other Z Fighters (except Piccolo) cheer and clap for Vegeta for legitimately becoming a good person, several of whom hated him for a long time:
It is Krillin who actually leads the cheers. Remember, Krillin is the guy who (after having seen many of his friends die all the way back in the Saiyan Saga) believed that Vegeta could never change, which he believed as late into at least the tail end of the Cell Saga. It seems he has changed his mind. In the dub, he goes as far as to call Vegeta a model citizen (which is probably in reference to his new job as a police officer).
In the same vain, Tien also joins in on clapping for Vegeta. Back in the Cell Saga, Tien refused to accept the Saiyan outfit Bulma made for him, because he couldn't stand to dress the like someone who has done as much evil as Vegeta. Just like Krillin, it seem Tien has change his mind on the Saiyan Prince and expresses congratulations to him for becoming a better person.
Rounding out people who used to hate Vegeta, Yamcha also joins in on the clapping. More proof that he no longer holds any animosity towards the man who stole his girlfriend from him.
Gohan's reaction when Videl reveals to everyone that she's pregnant with Pan.
Beerus respecting Goku enough to spare Earth in the end after he teaches him to let go of his pride and admit that he can't win.
Made even better? He uses Vegeta as an example of putting away pride, pointing out that Vegeta was willing to humiliate himself to protect the Earth and his family. The God of Destruction sees Vegeta, in that one moment, as the better man.
The end credits show a wonderful montage of the Dragon Ball manga from the very beginning to the very end, all while the English version of Cha-La-Head-Cha-La plays in the background. A memorable way to remember how far we've come.
After Goku loses his God form and is overwhelmed by Beerus' ultimate technique, it seems as though it's all over. Visions of his family, friends, rivals — everyone he loves gives him an immediate Heroic Second Wind, and then Goku does the impossible: He activates Super Saiyan God by himself after it had already expired, when by Shenron's word it should be physically impossible to do that. Not from his drive to beat Beerus or be stronger, but his will to protect everyone he cares about.
Goku passes out briefly during Beerus's final attack, which is about to destroy Earth. The first image that he sees as the destruction of the world is imminent? His wife, Chi-Chi. For all the issues they have, it's touching that his wife is the first person he thinks of.
Just watching The Z Warriors and their friends and family laughing and having fun during Bulma's party. Seeing even The Stoic like Tien and Piccolo smiling and enjoying themselves.
After Shenron tells the Z Warriors they needed to find 'five Saiyans possessing righteous hearts' to create a Super Saiyan God, Piccolo says the only ones closest to that description are Gohan and Goten. It is rather heartwarming to hear Piccolo say that about Goku's children, and it shows how highly he thinks of them. It is another showing of how much Piccolo has changed since the beginning of the series.
It's just a very sweet moment when Beerus and Goku have their post-battle conversation. Their fight was vicious, but by the end they both hold each other in mutual respect.
As a matter of fact, when Goku starts to fall back down to Earth due to the exhaustion of the battle, Beerus actually holds onto him and helps him down more gently. Even though he lets him drop to the ground at the end, it was at a safe height where he likely knew Goku wouldn't really be hurt.
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