The Cell clones call Gohan "NERD!" when he tries to explain Cell's French phase to Goku.
Cell continues to be the only one capable of correctly pronouncing the name of Piccolo's Makankōsappō technique.note Though this time he includes a nod to its dub name by calling it the "Makankōsa-Cannon"
The Stinger features the Arlians rebuilding their planet.....only to get destroyed by Cell's Kamehameha.
Domestic Abuse: Thanks to Jimmy Firecracker and Goku's poor choice of words, Goku is made out to be a wife-beater. Chi-Chi, for what it's worth, just realizes that what he said is pretty much true. Just not as bad as what Jimmy said. Of course, pretty much everything Goku listed was from Chi-Chi's old-fashioned views on marriage.
Double Entendre: When Goku powers up, he beckons Cell to whip out his power and let him feel it.
Flat-Earth Atheist: Mr. Satan loses himself in this - he claims that magnets under the ring caused his ring out, Goku and Cell have lit themselves on fire for their Battle Aura, mirrors are being used for Cell splitting himself into four and the Kamehameha is just lasers and an industrial fan.
Cell: So, you gonna to take a swing? Or are you just going to stand there, staring into my eyes? Goku: Hmm, what was that? I was busy staring into your eyes. Cell: Oh you beautiful Saiyan bastard, just punch me already!
Foreshadowing: Gohan has no trouble following Goku and Cell's battle, and can tell they're still warming up.
In a meta sense. Krillin mocks Yamcha for assuming Cell would just fall out of the ring. In the original series, he was just as happy.
Then there's Goku telling Cell he won't be able to defeat him with stolen techniques, only for Cell to ask if Goku is going to use one of his stolen techniques. Even the Z-Fighters confirm that none of Goku's attacks are original.
Insane Troll Logic: Mr Satan handwaves Cell's multi-form technique as a mirror-trick. One problem there: how do the mirrors only duplicate Cell and not Goku?
Goku recounts that he beat Piccolo, Tien Shinhan, and Chi Chi at the 23rd World Martial Arts Tournament with a ring out.
Vegeta brags about destroying planets, which Tenshinhan tops by bragging about the time he beat Goku. This is likely a reference to when Goku taunted Freeza in the original dub by saying "I can't be harder to destroy than a planet, right?"
Pet the Dog: Once again Cell is nice to Yamcha. This time by telling him NOT to thank Tien for snarking at him.
Reality Ensues: Krillin wonders aloud what happens to the energy blasts that are constantly seen flying off into space. Gohan's reply (and demonstrated in the stinger) is that they would just keep on traveling until they hit something.