When he formally introduces himself to the team and tries to persuade Ji to let him be the Sixth Ranger of the team, when he slides into the room and arrogantly introduces himself as the Sixth Ranger.
Mike: And you thought I was cocky.
[Ji grunts in agreement]
In "Room For One More," Antonio interrupts an unmorphed group pose and knocks some barrels aside so he can have a place to stand after spending a few moments trying to fit himself into the pose to no avail.
Later, he pausesthe episode and shows the move he just did in slow motion while telling the audience how he did it!
In "Unexpected Arrival," the expression on Emily's face when Jayden swings his sword at the Nighlok spying on him and stops it just in time.
"Origins, Part 1" has Kevin seeing a black van with whom he thinks has the Red Ranger in it; then the window rolls down and we see Mia, so he assumes that the Red Ranger is a girl and, remembering that he's half-dressed, quickly zips up his jacket.
When Mike arrives on the scene, everyone assumes he's the Red Ranger to which he remarks: "No, I'm mighty green!"
In "A Fish Out of Water", Kevin is carefully scooping his cereal into a bowl while Mike adds a sarcastic remark. Then Mia comes with her peanut butter and jelly omelet... so Kevin just dumps the cereal and milk in a bowl and starts eating.
Antonio meeting up with Deker (in human form). He first assumes Deker is a fisherman, and asks Deker to keep a promise: to try his new barbecued baby barracuda kebabs. The best part? In a later episode, Deker actually does sit down as Antonio cooks the meal for him since he 'did promise'.
While not part of the series proper, the team's appearance at the Macy's Thanksgiving Day Parade 2011 has a funny moment - when it starts, a bunch of the Moogers have surrounded a car with Al Roker in it. Poor Al, not wanting the attention, cries out "Get Matt Laurer! He's more popular!"
In the movie, "Clash of the Red Rangers", most of the Grinders transform into bikes so the Moogers can ride them... except for one. After Jayden beats three of them, another comes up behind him... on the Grinder's back, which he defeats with a single hit. Although the last one did consider getting away after seeing that they didn't win by slowly retreating.
"Christmas Together, Friends Forever" has one golden moment in the form of Mia's present... a cookbook.
Kevin: "There's some good recipes in there. You should read it."
The way the Rangers portrayed the items they were trapped in during "Trading Places" definitely qualifies. A Nighlok trapped the souls of four Rangers into random garbage and the Rangers' bodies were posed as the items their bodies were trapped in. As a result, Jayden was a lawn gnome (bonus points to Alex Heartman for his goofy grin), Kevin was a music box ballerina (and had Mike put a tutu on his body), Mia was a fan and her body kept turning back-and-forth like one and Antonio was the fish he was going to eat and said fish was almost eaten itself by a stray cat (bonus points to Steven Skyler for his incredible facial reactions as he realized he was free and saw the cat had started devouring the fish by the time he returned to the kitchen).
The entirety of the other Rangers, except Emily, facing their fears to help Antonio get over his in "Something Fishy":
Jayden having a spider crawl over him and quickly flicking the arachnid off when the gap sensor sounds.
Kevin and Mentor Ji shoving Mike into a closet, who lets out a rather panicked 'help!' when the door closes.
Mia kissing a frog on the lips after making herself feel better by saying "Maybe if I kiss it it'll become a prince."
Kevin offering to eat Mia's cooking at the same time Antonio touches a fish, it ends up with Antonio chickening out while Kevin shoves a spoonful into his mouth. After the gap sensor goes off and everyone runs out, Kevin runs back in to spit the food back into the bowl before leaving again.
And how does Antonio finally get over his fear of fish? Ji walks up to him, says "Stop your nonsense and eat this sushi!" and shoves said sushi into the Gold Ranger's mouth.
Later on, the Lightzord's disc attack jams so Antonio tells Jayden to simply "Hit it in the butt!" The Red Ranger responds with a stunned "In the butt?"
In "Kevin's Choice", the Monster of the Week introduces himself by eating a part of Xandred's ship, eating half of Octoroo's staff, and then trying to eat Octoroo himself!
In a cute call back, when Mike dials Kevin's Samuraizer after the monster ate it to see where he was storing it, the photo of Kevin in his contact list was Kevin in the tutu from "Trading Places".
Bulk and Spike picking up and moving the photo booth to use as mobile cover to retrieve their food while evading Pestilox's bugs, and the subsequent photo montage.
In "Stroke of Fate", we see that the gum that Spike has been chewing all season is from truckloads of cardboard boxes that all are filled to the brim with the stuff. Then we have this call-back to Mighty Morphin:
Bulk: "It's Chewin Time!"
He's not just saying it either. He's actually holding a handful of gumballs like it was a Power Morpher.
The reveal of Lauren liking Mia's cooking. The other Rangers are absolutely flabbergasted.
There's also how the other Rangers avoid eating: Emily sneaks her food into a napkin while Kevin sneaks his onto Mike's plate while he's distracted.
And in the end, as Skull and Spike are waving goodbye to Bulk as Skull's limo (Priceless in itself) pulls away... a sign whacks them on the head.
Pretty much everything after the Rangers have been infected in "The Strange Case of the Munchies", not to mention the fact that the episode first aired the day after 4/20.