The dieting episode. Sabrina and Chloe are desperate to fit into a pair of jeans that only come in one size - purely because they think Harvey will be impressed. Everyone else points out that the model they want to look like is too skinny and scrawny. When they resort to magic to lose the weight, they end up shrinking to the size of earthworms.
"Molar Molar" contains a rather heavy-handed sequence where Sabrina goes to cross the street while the Don't Walk sign is flashing, nearly gets hit by a car and says out loud "I didn't even look both ways!"
In one Secret Life episode, Mr. Snipe asks Sabrina what the ninth planet in the solar system is called. Her response: "There isn't a ninth planet, there are only eight". Cue everyone laughing at her.
Chantal Strand voices Gem Stone and in one episode she complains about her polo ponies being stolen. One wonders if one of the ponies was named Diamond Tiara. Also hilarious since Britt McKillip (Princess Cadance) is the second voice for Sabrina.
Ho Yay: Harvey and Pi's friendship is extremely tight knit. The two are rarely seen apart. Pi even gets jealous (very jealous) when Harvey befriends young Thomas Edison. Also the scene in "What becomes of the broken hearted, when Harvey is trying to beat the arcade game, Pi waits for him through all 50 levels, even falling asleep on the floor. There's also the scene towards the end of Paranormal Pi where, Pi is practically in tears because Harvey refused to believe him. (It's clear at the beginning of this episode that if just Harvey believes him he'll be okay). And let's not forget "I got glue babe," when after Sabrina and Gem leave the two end up a riding a rollercoaster, all day, together. That just screams 'Date'.
"Witch Switch" hangs a bit of a lampshade on this one. Sabrina casts a spell to switch lives with Gem, wanting to enjoy the privilege of being rich. It immediately turns into a case of Be Careful What You Wish For as Sabrina experiences the difficulties Gem has in her life. But what she also didn't realise was that Gem would receive her magic powers. Gem laughs at Sabrina's idiocy for giving up her magic.
The Eiffel Tower episode begins with the most contrived form of this. Sabrina asks Salem for something to help her carry all her aunts' shopping. Specifically she asks for a magical purse. Salem suddenly forgets how purse is spelled and ends up casting a spell to create a magical person - from the only spell in the book that appears to be continued onto another page.
The rumour episode of Sabrina's Secret Life. The episode hinges on Sabrina and friends believing rumours as if they're grade schoolers - when they're actually older than the previous series. As such it's a clear Captain Obvious Aesop.
Jerkass Woobie: Alvin, the Anti-Villain from the episode "Planet of the Dogs". Yes, he kidnapped Sabrina's family and yes, he is in serious need of a hug.
Les Yay: Sabrina and Chloe in "Witchy Girls" since the two of them arguing about what they want back from each other is a clear parallel to a Divorce Assets Conflict.
Moe Couplet: Harvey and Pi. When Pi's around Harvey he shows his protective, big brother side...which makes him even cuter.
Seasonal Rot: Virtually no one likes Sabrina's Secret Life. Fan favourite characters like Gem, Pi and Chloe get Put on a Bus, Harvey becomes a complete idiot and Sabrina herself becomes a massive Jerkass. The overall quality of writing decreases, becoming far more 'educational' that the rather well-thought out Aesops of the previous show.
The Christmas Episode. It subverts the usual cliche of doing Yet Another Christmas Carol where a scrooge is scared into being nice for the holidays. Sabrina's attempted spell just makes Gem love herself even more, and she grudgingly admits that she mainly just wanted revenge. So she ends up giving Gem a sincere gift and wishing her Merry Christmas anyway. Gem realises that no one else cared enough to be with her on Christmas, and joins Sabrina and her friends for the celebrations.
Also the episode where Sabrina decides to become an adult and then quickly realises all the responsibilities that come with it. Even more poignant was the spell - if she didn't reverse it within a specific time frame then she would be an adult forever. A very powerful metaphor for how if children don't enjoy their childhood while they have it, it'll be gone before they can appreciate it.
Another episode has Sabrina making a birthday gift for Salem but, after hearing him bragging about the famous historical figures he knew, bins it thinking he'll want a much more spectacular gift instead. After a hectic episode where she tries to get the historical figures in question to wish Salem Happy Birthday on video camera, Salem finds the gift in the trash and tells Sabrina it's his favourite because of how personal it is. To the aunts and Uncle Quigley, Salem is just a nuisance that they have to take care of but Sabrina is likely the only one in the house who genuinely cares for him. The message was helped along slightly by not having the stock plot of Sabrina trying to buy something really expensive. Oh and the gift in question? A hand made photo frame with a picture of Salem and Sabrina together.
Harvey's Broken Pedestal / Rebuilt Pedestal for his favorite action hero. Actors are just that, actors and most of the time, they're ordinary people who don't do the fantastic feats we see on camera. But that doesn't mean that they're not capable of great heroics when push comes to shove.
Special Effects Failure: In "Documagicary" the Netherworld producer teleports away in what probably supposed to be a Smoke Out exit, but there's no smoke and Sabrina just starts coughing for no reason.
Tearjerker: Poor Edward in, "My Stepmother the Babe." He believes he's found someone he loves on an emotional and intellectual level, only for his jealous daughter to cast a spell on his bride-to-be and completely warp her personality into an immature pre-teen. Thankfully the spell is said to wear off in a while - though not after Edward himself has been hit with it, and thoroughly embarrassing Sabrina in public.
Unintentionally Unsympathetic: Sabrina in Sabrina's Secret Life is prone to a lot of Jerkass behaviour. It's usually to set her up learning An Aesop and the show has no problem calling her out for her mistakes. But the sheer amount of nasty things she does makes her rather unsympathetic - notably teaming with Cassandra to get revenge on Maritza, casting a spell to make Harvey fawn over her, believing an obvious rumour about Harvey cheating on tests and getting half the Netherworld sick with gargoyle flu.
The Woobie: You have to feel really sorry for Maritza in the episode with the school dance. She only asks Harvey out to stop Cassandra from doing so - fully intending to suggest he go with Sabrina instead of her. Unfortunately Sabrina gets the wrong idea and breaks off their friendship, not to mention conspiring with Cassandra to get revenge.