As mundane as it may seem, for many English fans, finally being able to hear Goku's surname in the dub certainly qualifies as a CMOA, especially given the context. And for bonus points, Sean Schemmel was the one who lobbied for it to happen in the first place.
I AM THE SUPER SAIYAN, SON GOKU!!!.
The Ginyu Force's entrance.
Ginyu Force Rules! Ginyu Force Rules! Ginyu Force Rules! Ginyu Force Rules!
In the Junior matches of the 25th Tournament, Bulma gives the snobby parent verbal taunting like she's reverted back to her sixteen-year-old self. But when the snobby parent finally loses it after Goten knocks her second son out, it's Chi-Chi who punches her out and says "Looks like I still got it, huh?". It's an awesome Call-Back to when she made it to the final rounds of the 23rd Tournament way back in the original Dragon Ball.
Just after his SSJ3 fight against Majin Buu, Goku gives this parting line to Babidi:
Oh, and by the way, Babidi? When you get to Hell - which believe me is gonna be sooner than you think - King Yemma will make you suffer."
The dub, in general, being more accurate to the original Japanese with better voice acting to boot. It's vindicated Funimation further as a competent dubbing company, including the (explosive) usage of Son Goku's surname for the first time, and gave fans who don't care for Z's dub a great one to watch.
The infamous "IT'S OVER 9,000" scene gets one for both versions: in the first version, it feels great hearing Christopher Sabat say the line in pure Large Ham fashion. In the second one, they finally corrected it so it's over 8,000 instead of 9. This would be carried over to future adaptations from here on.
The original Dragon Ball Z was a well-loved icon on Cartoon Network's Toonami block, with the Ocean dub managing to find its ground on the block after a failed syndication run, bringing in some of the highest ratings the network has ever seen, and convincing Funimation to continue the english dub in-house. Fast forward to 2014, a couple years after Toonami was officially revived as a Saturday night block on [adult swim], and the production crew has confirmed that, following in the footsteps of the original, Dragon Ball Z Kai would officially be airing in Fall.
On August 8, 2015, the airing of Kai on Toonami pulled down over 2 million viewers. It became the first show in the history of the relaunched block to do that!