Adaptation Displacement: Just look at this Wiki and how it favors the show. Not only do many people not know the show was based on a comic, or even that Sabrina is from the same comic family as the main Archie Comics, many elements and characters from the show were used in later versions of the comics (such as Salem originally being human.) There was also a 70s Saturday morning cartoon (Sabrina and The Groovie Goolies) that older audiences may recall, and a TV-movie before the show that no one remembers. This has been slowly changing with Sabrina's appearances in popular Archie spinoffs and her appearances in the main Archie comics themselves. That's not to mention that Hilda and Zelda's personalities were the other way around in the original comics, and the TV movie follows that. But fans are now more familiar with Hilda as the ditz and Zelda the disciplinarian.
Anvilicious: Many of the magical illnesses or other Plot Coupons in the TV series were based around obvious Aesops. (Too vain, turn your boyfriend into wolf-boy. Try to use magic to get your rival out of your hair, nope, now you're tied to her.) Lampshaded by Sabrina. (See Freudian Excuse on the main page.)
Author's Saving Throw: Harvey was axed after Season 4 because producers felt Sabrina needed to leave "that high school baggage behind". After numerous fan protests, he was made a regular again in Season 6.
Salem is easily the most popular character on the show, providing most of the best lines and plots.
Libby was also Love to Hate. She was the former trope namer for Alpha Bitch because she was such a shining example of it.
Out of Sabrina's rotating circle of best friends, Valerie seems to be the favourite.
Girl Show Ghetto: Inverted. To cash in on Sabrina's popularity, ABC produced two Urban Fantasy series, Teen Angel and You Wish, though with male protagonists. Both shows ended after a season, while Sabrina lasted for years and even had a few spin-offs.
Growing the Beard: Seasons 2 and 3 are generally considered to be the best the show was at.
Harsher in Hindsight: Season 3's Valentine's Day Episode has Cousin Marigold trying to bond with her new boyfriend's kids. In Season 5's "Witchright Hall", we learn that Marigold has divorced again - and given how bratty Amanda still is at that age, it's almost certain she had her part to play in the relationship failing. There's also some inherent Fridge Horror in if she did something else to Emile or his boys once she got powers of her own.
In season three, to stop Valerie from becoming a cheerleader, Sabrina tells her that no cheerleader ever went on to become president. Two years later, George W. Bush was elected - and he had been a cheerleader.
Also Valerie's desire to join the cheerleading squad becomes absolutely hilarious - bordering on Casting Gag - if one watches Bring It On where Valerie's actress Lindsay Sloane plays head cheerleader and Alpha Bitch Big Red.
Hallie Todd's episode as Cousin Marigold ends with her attempting to bond with her new boyfriend's kids. Hallie Todd guest starred in an episode of Two of a Kind where she tried to do the same thing - and failed miserably.
In Season 2's "Quiz Show", Sabrina says to the Head Quizmaster "you must have been confusing me with my evil twin". One season later it's revealed Sabrina does have an Evil Twin.
Hilda and Zelda get mistaken for a lesbian couple more than once.
Jerkass Woobie: Try to resist the impulse to hug Amanda at the of the Season 7 episode "Bada-Ping", when she realizes she's the cause of Sabrina's predicted death. (A prediction that, thankfully, never comes to pass.)
Mis-blamed: The show was constantly accused of being a rip-off of many similar shows during its run, most notably Out of This World and Bewitched. Despite popular belief, Sabrina was originally a comic book character in the 1960s, and predates Bewitched. To its credit, Sabrina was inspired by Bell, Book and Candle, which was also the inspiration for Bewitched. The idea that a witch would become mortal if she fell in love with a human, which was mentioned in the first comic, and later dropped entirely, was directly taken from the movie.
Sabrina started out as a comic in the 1960's. She is older than Bewitched.
In Japan, the show was often mistaken as a rip-off/remake of I Dream of Jeannie, due to the shows being dubbed "Cute Witch Sabrina" and "Cute Witch Jinny" respectively. Funnily enough, Sabrina in the Filmation cartoon was dubbed by Akiko Nakamura, who was also Jeannie's dub voice.
Josh for Harvey. Whereas Harvey and Sabrina had a fairly healthy relationship, Josh's relationship with Sabrina was all about her giving and him just taking. He was going to move to Prague without considering her feelings, is obsessively jealous, chews Sabrina out for embarrassing him at work and never supports her plans or wishes. This is hilarious considering Sabrina actually ends up with the fan-favorite, Harvey, in the series finale.
In season 4, Dreama for Valerie and Brad for Libby.
Downplayed but Zelda's characterisation is almost universally preferred from Season 2 onwards. She began as a much sterner and stricter character. In Season 2 she was greatly softened and got a lot of Not So Above It All moments. The dynamic between her and Hilda was much improved as a result.
Roxie gets much better after she defrosts, and is shown in a far more sympathetic light. It's safe to say that she ends the series as one of the closest friends Sabrina has ever had.
Season 4 is recognised as the start of the rot, with storylines suddenly becoming a lot less fun. Fan favourite characters Libby and Valerie were Put on a Bus to be replaced with inferior substitutes like Brad and Dreama.
Season 5 likewise relocated the show from high school to college, dropped most of the supporting cast and introduced a load of new characters. The storylines also got more 'mature', which clashed with the earlier fun feeling of Seasons 1-3. Dropping Harvey resulted in fan outrage too. Seasons 6 and 7 were noted to be a little better than 5, though not as close to the quality of earlier seasons.
Shocking Swerve: The first couple of minutes of the first episode of Season 7, which very clumsily explained the resolution to the cliff hanger ending of Season 6.
Strangled by the Red String: A straight example in the final season that ultimately evolves into a Deconstruction. Sabrina falls for Aaron in his debut episode so much that she uses magic to find out what his flaws are. They hook up at the end of the episode and for the rest of the season simply act as a couple that's been together for years, rather than developing slowly. It's never explained why Sabrina literally makes room for him in her heart. However cracks start to appear as Sabrina initially thinks his proposal is a trick caused by the Monster of the Week and accepts reluctantly. The rest of her actions during their engagement come across as straight-up denial more than anything else. Finally when her wedding day comes, she gets cold feet and dithers between that and denial. She and Aaron ultimately agree to call off the wedding.
Take That, Scrappy!: It seems almost too coincidental that Josh is the one who gets murdered in the Season 6 Halloween Episode. Especially when it's revealed that everyone wanted to kill him.
Libby the ultimate Alpha Bitch disappears after Season 3, explained as being sent away to boarding school. It was hinted numerous times that Libby had Hidden Depths, and it could have been interesting to see how that would evolve as she matured.
Jenny also vanishes after Season 1, gradually featuring less and less as the season went on. Of course since the fan-favourite Valerie replaced her, it's not as glaring.
Values Dissonance: One episode set in high school involves Sabrina learning that Harvey doesn't want to go to college, so she spends the rest of the episode trying to get him to go in order to get a decent job for his future, and ends with him still wanting to be a mechanic but deciding to go to college as a failsafe. While this was directed at kids (thus it would be a Family-Unfriendly Aesop to teach little kids that you don't need college), it was also made back in the 1990's before the rising college tuitions, cost of living, and wage gap became so great that obscenely high student debt and struggling college graduates became the norm by the 2010s. Today, most viewers would probably see Harvey's plan to save money by not going to college and find success through some other means as a smart financial decision.