Heartwarming / Treehouse of Horror

Yes, even the annual spooky Halloween specials have sweet moments buried underneath all the screams and horror.

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• In "Dial Z for Zombie", Bart helps Lisa in resurrecting Snowball I. Sure, he only did it to try his newfound dark magic but the gesture is still sweet.
  • When the zombies invades the Simpsons' home, Homer offers himself to them to save his family. Unfortunately, the zombies don't take someone who has no brain.
• In "The Devil and Homer Simpson", Homer pledges his soul to Marge before they got married. This act saved Homer's life.
• Willie throughout "Treehouse of Horror V" desperately tries to save the Simpsons. Sure he fails and gets killed in the process but it's a far cry from the grouchy jerk that most fans know him as.
  • He even gets a bone thrown for him at the end when he sings alongside the Simpsons.
• "Citizen Kang" reveals Kang and Kodos as a Brother–Sister Team. When they use advanced technology to impersonate then-presidential candidates Bill Clinton and Bob Dole, it doesn't occur to them that their habit of "constantly holding hands" will be seen as strange to the voting public.
  Kang: We are merely exchanging long protein strings. If you can think of a simpler way I'd like to hear it!
• In "Hell Toupée", Homer resists Snake's control over him to protect his son.
• "Starship Poopers" plays out a scenario in which (through no fault of Marge's) Homer is not Maggie's biological father...and the fact (along with her increasingly manifesting the gruesome traits of her genetic father, Kang, sprouting fangs and losing her legs to grow tentacles) doesn't alter Homer's feelings for her in the slightest as he unhesitatingly fights for custody. While the segment doesn't dwell on this aspect of the situation, it's nicely driven home by a rowdy audience member when the controversy winds up on Jerry Springer.
  "If you're that baby's daddy, where you been at?"
• In "Frinkenstein", Professor Frink reanimates his father to show him what he's achieved, as well as how the world has changed since his time in an attempt to bond with him after having a rocky history with eachother. After Frink Sr.'s own selfishness reduces him to an organ-stealing monster, the only thing that can really snap him out of it is realizing that his son has truly done things to make him proud. When Frink has to eventually re-kill his father, Frink Sr. dies content that his son's become the better man between them.
• The Dance Party Ending to "XV", which shows the casts of all three segments just enjoying themselves with absolutely adorable dancing. It really gives off a sense that, when all is said and done, they're all the characters we know and love playing different roles for the segments.
• In "Un-normal Activity", Homer once again makes another sacrifice to protect his family by engaging a three-way sex with two demons.
• "Don't Have a Cow, Mankind" Dr. Hibbert saying to Simpsons that if they see his wife then tell her that he loves her.
• In "School is Hell", Bart is given one last test to make him a full-fledged demon and that is....to maul Homer. Bart is horrified by this and refuses to harm his father.
  • But then it's revealed that Homer willingly accepts this and admits to Bart that he's so proud of him for becoming successful.
    Homer: Bart, you went to Hell and came back a winner like Jesus. Now come on boy, pull me apart like string cheese.
• In "Geriatric Park", Lisa saves the day by spending time with the human-turned-dinosaur, Abe.
• In "The Ned Zone," Ned calls Homer his best friend.
• In ""Simpsonsworld", one of the first things the Homer robot, still thinking and acting like its the real thing, does is ask where his family is, clearly worried for their safety.
  • The way the robot Homer helps the robot Lisa deal with her existential crisis about not being a real person.
    Homer: Look, honey, it's never easy to find out you're not actually alive. But that's just part of life! I know the love we feel is real! So we've gotta wake up the rest of the family and get the hell out of here! Now help me pick out the hottest Marge!
  • When the show cuts to the family escaping, "the hottest Marge" turns out to be Marge in her normal Iconic Outfit.
• During "Bart's Nightmare" from II after Homer is turned into a jack-in-the-box by Bart, Mr. Marvin Monroe suggests they get to know each other through bonding activities. Said activities include a ball game, fishing, going to church, and an amusement park. By the end of the segment, Bart is so touched by Homer's affection, that he gives him his old body back and the segment ends with the two of the embracing, saying they love each other and Homer kissing him. Granted, the true ending has Bart screaming his head off during his Catapult Nightmare, but still...
• In "Ei8ht", the lengths the remaining Simpson sisters went through to avenge Bart’s death at the hands of Sideshow Bob during "Cape Feare".