From "The Importance Of Being Norma" when Salem tries to wake Sabrina up. Eventually he conjures up a heavy metal band beside the bed that makes her fly through the ceiling.
Salem: (in a baby voice) Did we have a good sleepy-weepy?
Sabrina: (through clenched teeth) It was fine till the akey-wakey by the witty kitty.
"Shrink To Fit" and the huge contraption Salem produces for Sabrina to fit into her new jeans (which are only meant for a size 0 waist, which Sabrina and Chloe discover they don't have). The button ends up flying off, bouncing off everything in the room and finally flying down Salem's throat.
Not to mention when he first produces it there's a crumbling skeleton left inside.
Chloe: I can see the headlines now - "Chloe Flan and friend die in Freak Fashion Accident".
Sabrina: 'And friend'!? I'm 'And friend'!?
When Sabrina and Chloe get sucked into Harvey's video game and find themselves dressed in Xena-type armour and armed with swords.
Chloe: I think we're bad girls now.
When Sabrina gets her wisdom teeth removed magically, which removes her common sense (such as walking into oncoming traffic, trying to hitchhike home, and telling her friends and enemies what she really thinks of them). She ends up insulting Chloe's dancing and says she looks awful in her outfit before running off hastily and giving Chloe this line made hilarious by Cree Summer's delivery.
Chloe: When you get home, might I suggest you take a loooooong nap grumpy!
Quentin Tarantulino. Nuff said.
Sabrina casts a spell that accidentally destroys the town's dam and the entire town has to evacuate. We see Gem dragging a suitcase overflowing with shoes and Zelda levitating Hilda's bed out the door with Hilda still sound asleep. And when everyone thinks Sabrina is the hero, the popular girls offer to give Gem a wedgie to show their support.
Sabrina's grandparents have a blazing row which involves casting spells at each other. Grandma is a proper hippie flower child and is enraged to suddenly be in a business suit with a Prim and Proper Bun while Grandpa is the opposite and is enraged to be given dreadlocks and a Hawaiian shirt and shorts.
Sabrina, Hilda and Zelda cast a spell to make them relive their honeymoon. Things go wonderfully...right until they find out the hard way that the grandparents chose to visit the Rings of Saturn during meteor season.
In "Wag The Witch" one of Gem's plots to make Sabrina seem extra weird involves bribing a perfume saleswoman...to ambush Sabrina and start spraying her with musty perfumes. And at the end of the episode, Gem's comeuppance is the same woman chasing after her and spraying her with perfume too.
During "Cliché Week" we get some lovely Visual Pun moments:
At the end of "Witchitis", when Harvey and Pi scream blue murder after seeing a dragon, while said dragon just stares at them with a bored expression on his face. Also the fact that Pi appears to be trying to hide behind Harvey (some justice for trying to scare him and Sabrina at the beginning of the episode).
In "Strange New World", Pi apparently gets so mad he can melt ice...the Vice Principal was not impressed. "Pick up this mess or it's double detention!" *gloom*
'Hexcalibur' Arthur being bested by a tree and Merlin getting his ass handed to him by SALEM.
The fact being that Harvey is a complete idiot in Sabrina's Secret Life.
From "Wag the Witch":
Salem: And who is it that put the cat out last night? The cat did not want to go out! The rottweilers from next door were loose. I had to sleep in the mailbox!
Sabrina's caller ID.
The hilarious shoes that Hilda tries on.
Harvey in a dress...then Pi shows up in the same dress.
The ridiculous stories the newspaper reporter runs about Sabrina.
Pi is apparently a member of a clown group....and a KISS fan.
Everyone avoiding Sabrina because they assume she has bad breath.
Sabrina messing around on the elevator at the mall.
From Paranormal Pi:
Salem becoming Zamboni's yes-man, agreeing with everything the old grouch wants, just in hopes of getting turned back into a warlock.
Sabrina pranking Slugloaf and Chloe's snarky comment.
Chloe: Gee. I wonder how that happened.
Harvey mistaking an order box for an alien communicator.
Pi getting dragged down the street, crashing through a fence and knocking over a flower salesman, who loses all his petals.
Salem and the living foot stool running away and hiding in terror at Zamboni's outrage.
Though it's pretty sad too, Pi falling in the mud is pretty funny.
Harvey: I wonder if it gets cold here at night? Gem: I'll keep you warm, Harvey. Harvey: Uh...did I say cold?
Salem going crazy...that is all, except for the part where he steals the propeller.
Also from "Strange New World":
Salem: You think you have problems?! I was just trying to get a card game going! (He is surrounded by a polka band) I said Poker, not Polka!
Sabrina: It pays to watch old westerns. Hiho Silver away!
Tiny little Pi pushing Tom out of the classroom is really funny if you look at the way Tom towers over him. The same goes for his little hissy fit after the explosion.
Harvey: (talking about going to the mall) If Tom's in. I'm in! (Runs off)
Pi: (Yanks him back by his arm) Harvster. If you can break away from the Tom fan club. You'll notice we have to rebuild our project!
Harvey: Oh yeah. And then we can show it to Tom and HE can make sure it works! (Runs back inside)