"A is For Aardvark": After Darrin sprains his ankle, Samantha casts a spell that instantly fulfills his requests for food and such. Darrin soon decides that he and Sam could live luxuriously off of her witchcraft, and quits his job. However, when Sam receives the simple anniversary present he bought with his hard-earned money weeks earlier — a bouquet of flowers and a watch engraved, "I love you every second." — her Tears of Joy assure him that she truly believes they don't need magic to have a happy marriage. At Darrin's request, Sam turns back time to before he got a taste of supernatural instant gratification, so they can resume life as a mostly-normal couple.
"Illegal Separation" has one, too. Gladys and Abner Kravitz have an enormous fight that results in Abner moving in with the Stephens and driving them crazy. To reunite the couple, Samantha uses her powers to give them both the same dream about the happiest day of their lives—namely, the day Abner proposed to Gladys. After seeing the entire dream (which is quite sweet in and of itself) through to the end, Abner and Gladys wake up simultaneously and immediately start calling for each other, running out of their houses and into one another's arms. Samantha lampshades the whole incident by making the Kravitzes run in slow motion,note One of many, many sarcastic takes on a popular Clairol commercial but that doesn't make it any less romantic.
In a smaller moment at the end of the episode, Darrin and Sam are preparing for a night in when Gladys and Abner come knocking to deliver a gift for their hospitality. Abner notices that they're having champagne and takes it as an invitation to join them, but Gladys—the EPITOME of the Nosy Neighbor who was constantly looking for excuses to sneak into Sam's house—remarks that they are probably intruding and should leave. For a character whose name has become synonymous with snooping around to offer someone privacy is the kindest thing imaginable.
In the episode, "And Then There Were Three," Darrin and Endora have a moment with each other. Yes, the two of them actually have a moment with each other. Endora pops into the waiting room to relay to Darrin all about the birth of Tabitha, and the two of them are so overcome with emotion, they start shedding tears; they even hug each other, and Endora even zaps up some hankies for them to share. Of course, the moment still ends on a silly note, when Endora jokes that she watched Tabitha slap the doctor across the face after he slapped her on the rear.
Darrin: You know, Endora, sometimes, you can almost be human.
Endora: This is no time to be insulting!
In "If They Never Met", Endora interrupts a heated argument between Samantha and Darrin, to show Sam whether or not Darrin would be happier if he never met her. At first, this seems like the case. Darrin appears much wealthier, and gets promoted to become Larry Tate's partner. Despite all that, Sam eventually learns that he doesn't believe he's found true happiness, especially since he might enter a loveless marriage with Rich Bitch Sheila Summers. Sam decides to get Darrin's attention by invoking a Crash-Into Hello with him, and he falls so deeply in love with her, he goes to call off his engagement to Sheila. After Sam returns to reality, she and Darrin embrace after he admits that while sometimes he does wish they never met, he realizes most of the time that he can't live without her.
From "Samantha Loses Her Voice": this brief little moment between Darrin and Uncle Arthur:
Darrin: Strange as this may seem, you're the best friend I have in Sam's family. Even with all your practical jokes, I know that you really love us, and you mean well, and—
Uncle Arthur: Alright, let's not get sticky. You know, Sammy? Even though he is a party pooper... I like 'im.
In the episode "Make a Wish", Darrin gets three wishes. Endora gifts these to him without his knowledge to prove to Samantha he will use them so he can have an affair. Instead, he doesn't. When he realizes he has them, he is given the chance to use those wishes to force Endora to forever stop her meddling and leave them alone. Just as he is about to do so, he notices how much such a thing would hurt Samantha, so he modifies it to a week.
In "Cousin Serena Strikes Again", Serena barges in at a dinner that Darrin is holding for a Femme Fatale client (Clio Vanita) who is trying to put the moves on Darrin. Incensed, she declares that "Nobody is going to make a monkey out of my cousin" and turns Clio into a primate. It did cause a lot of trouble but it was sweet that Serena would act to defend her cousin from homewrecking.
On a meta-note: when Marion Lorne, who played Aunt Clara, passed away, the showrunners didn't replace her, instead coming up with the Suspiciously Similar Substitute Esmeralda (who, like Clara, often messed up spells and got into wacky situations). For the show that literally named The Other Darrin and recast everyone as needed to honor Lorne in such a way is a sign of just how respected and loved she was on the set.
In the film, the friendship that Maria and Nina display with Isobel. Isobel displays some odd gestures and behaviors around the set (and off the set) that would label her socially awkward at best. But instead of ditching her, both women continue to stay on with her throughout her troubles and help her make sense of what it's like to be a mortal.
Isobel's father. While Isobel shunned being a witch, not once did Nigel ever make life worse for her. Sure he'd pop up from time to time, but he continued to be there for her, especially after her breakup.
While Jack does have MAJOR Jerkass tendencies, the fact that he continued to stick by Isobel even after she went off at him, shows that he can see potential in her and wants her to succeed.
Heck, just look at how he practically squees when Isobel finally calls him out on being a jerk! He then takes what she says to heart, treats her better, and has her character play a bigger part on the show.
The scene after the taping where Isobel and Jack are eating Chinese food in the park.
And the scene in the studio.
This is a minor heartwarming moment, but while Isobel has been known to manipulate things (and to some extent, people), she does concede that dropping a light fixture on Jack's "wife" is a bit too much and modifies things so she's not going to harm anybody (or herself).
From Jack's side of things, his ex shows up, begging for him to take her back, and he just tells her that he's fallen for a woman who he knows will never lie to him or deceive him.
Iris lending Isobel some support on-set when she's getting screwed by Jack and the crew.
Iris also manipulating things at the party so that Nigel is not going to pull his usual tricks counts too.