Works with their own pages:

* ''Heartwarming/BackToTheFuturePartII''
* ''Heartwarming/BackToTheFuturePartIII''

!!Other
* Bob Gale [[WordOfGod telling us the story]] he and Bob Zemeckis came up with behind Doc and Marty's friendship.
-->'''Bob Gale:''' For years, Marty was told that Doc Brown was dangerous, a crackpot, a lunatic. So, being a red-blooded American teenage boy, age 13 or 14, he decided to find out just why this guy was so dangerous. Marty snuck into Doc's lab, and was fascinated by all the cool stuff that was there. When Doc found him there, he was delighted to find that Marty thought he was cool and accepted him for what he was. Both of them were the black sheep in their respective environments. Doc gave Marty a part-time job to help with experiments, tend to the lab, tend to the dog, etc.
** The [[ComicBook/BackToTheFuture 2015 IDW comic book]], co-written by Gale himself, makes this canon. Apparently Marty was playing his guitar in the garage one day in 1982, and Needles showed up with his punk friends and insisted on "borrowing" the interocitor tube for his amp, in preparation for their show that night. They broke Marty's, and then dared him to steal one (using the old "chicken" trick). The rest is history.
* Everything that is HilariousInHindsight regarding the second movie's events in 2015. One would think that everyone would laugh so hard at seeing it today or past it, when it is 2015, and make fun of the movie. But because the ''Back To The Future'' trilogy is still considered a classic and adored by many even today, they instead embrace the sequel warmly and some companies plan to make the self-automatic-lacing shoes and hoverboards like seen in the movie, so their prediction won't be that off mark.
** ''Part II'', is usually regarded as the weakest in the trilogy, but in the months preceding 2015, there were probably more jokes and memes related to it than any other year as well as more people watching it, and discussing it more.
** When October 21, 2015 finally arrived, Creator/ChristopherLloyd [[https://www.facebook.com/BTTF/videos/vb.141545972523915/1041479309197239/?type=2&theater reprised the role of Doc to deliver this message]].
** ''USA Today'' published a "[[https://twitter.com/USATODAY/status/656848835520675840 Hill Valley Edition]]" on October 22, 2015, which ''Part II'' noted as the day on which Doc Brown purchased a ''USA Today'' reporting on the arrest of Marty [=McFly=] Jr. To pad out the front page, it added some stories about other going-ons in 2015 Hill Valley, including one announcing that Robert Zemeckis would direct a TruerToTheText movie adaptation of George [=McFly=]'s ''A Match Made in Space''.

!!Part I:
* Just after George knocks Biff through the wringer, then kindly asks Lorraine if she's all right. It's just so cute!
-->'''George''': Are you okay?
-->'''Lorraine''': (silently nods)
** And the way they walk off together! ''CUUUTE!''
** Even better; Marty, for the first time in his life, actually gets to see his dad kick ass. The look on Marty's face says it all.
* George and Lorraine's first kiss while "Earth Angel" plays, not only for what it meant for George and Lorraine, but also because it saved Marty and their other children at the very last second. After the kiss, George waves to Marty over Lorraine's shoulder, and Marty waves back, clearly glad to still have a hand to wave ''with.''
** Afterwards,
* The text of Marty's warning letter to Doc:-
-->'''Marty''': Dear Doctor Brown, on the night that I go back in time, you will be shot by terrorists. Please take whatever precautions are necessary to prevent this terrible disaster. Your friend, Marty.
* Finding out that Doc really did use Marty's advice.
-->'''Marty:''' What about all that talk...about screwing up future events? The space-time continuum?
-->'''Doc:''' Well, I figured, what the hell.
* Marty's time spent bonding with Past!George was surprisingly endearing.
** Culminating in George's goodbye line to Marty before the latter returns to the future: "Well, Marty, I want to thank you for all your good advice. I'll never forget it." And he doesn't.
** Before leaving, Marty tells George and Lorraine that being with them was "educational", as he learned that [[NotSoDifferent they weren't that different from him]] and he appreciates them more for that.
* When the Libyans arrive the first thing Doc says is "Run for it Marty!!" and it's emphasized even further by the LastWords he says: [[HeroicSacrifice "I'll draw their fire!"]] Despite how frightened he is (and let's face it, with good reason), Doc cares more about Marty than he does about himself, and is willing to sacrifice himself without a second thought to give his best friend a chance for survival.
* It's pretty heartwarming to see the HiddenDepths of future mayor Goldie Wilson. In 1985 he's been [[DisproportionateRetribution described as a bad guy simply because he wanted to replace the clock tower]] despite it being a major part of history. However in 1955 Marty himself sees that he was simply a good guy trying to make a difference. He even tries to advise George [=McFly=] to stand up to Biff during his first appearance. Despite not liking his job, he triumphantly marches with his mop in hand saying the following:
-->'''Goldie Wilson:''' Mayor Goldie Wilson, I like the sound of that.
** Not to mention the sweet look on the face of the waitress behind Goldie as he proudly boasts his political aspirations to his boss. It's an easily missed moment, but she just stands there and smiles as he proclaims that one day he's going to be somebody important. Who out there wants to bet that she voted for him?
* Jennifer writing "I love you!" next to her grandma's phone number for Marty.
** And before this, the two of them are walking and discussing the possibility of Marty sending his demo tape to a record company (which Jennifer is 100% supportive of while Marty doesn't have that much confidence about his talents), when Marty is [[DistractedByTheSexy distracted by two attractive women walking by]]. Instead of getting pissed and going into ClingyJealousGirl mode, Jennifer just nonchalantly turns Marty's head towards her and continues the conversation. They then carry on and are shown playfully flirting as if nothing happened. It's small, but it speaks volumes of what kind of relationship the two of them must have, and how close they must be. Which, [[TheyWastedAPerfectlyGoodCharacter unfortunately]], wasn't explored very much over the trilogy thanks to Jennifer being seen as TheLoad by the writers.
** Also, as Marty complains about his parents, who we haven't met yet, Jennifer tries to tell him that they mean well, which Marty will realize after spending time with them in 1955.
** [[FreezeFrameBonus And if you look carefully]] in Marty's room, you can see he has a big framed photo of Jennifer on the shelf above his bed. D'awww.
** Finally, when Marty is trying to explain to Doc why it's so important that he gets back to the future, he tells him that "I got a life back in 1985; I got a girl!" and shows Doc the love note Jennifer wrote on the flyer.
* 1955!Doc's triumphant yell when he sees the [=DeLorean=] go back to the future. Part of that was definitely it finally sinking in that he finally made something that worked.
** Even before that, after Doc gets over his OhCrap moment of realizing the power cord is unplugged, jeopardizing Marty's time jump, he gets this look of determination on his face - no matter what, he WILL get Marty back to his right time. His unrestrained joy at pulling it off seals the moment.
** Relating to this, when Doc and Marty first meet in 1955, the latter tells Doc the story of how he came up with the flux capacitor as proof that he really is from the future. Doc then takes him to where the [=DeLorean=] is hidden, and shows him a picture he drew of the flux capacitor. Marty then reaches into the car and switches on the real thing. Doc's gleeful "IT WORKS! I FINALLY INVENTED SOMETHING THAT WORKS!" is a sight to behold.
* One that owes a lot to FridgeBrilliance: Marty telling 1955!Lorraine that she might regret drinking later in life. Remember that 1985!Lorraine is a bloated alcoholic due to her unsatisfactory marriage. Marty was trying to save her that fate by discouraging her drinking before it got out of hand.
* Doc's return to 1985 at the end. He didn't come by just to say hi or anything, he came by because he found out something horrible will happen to his best friend's future family and he wants to set it right.

!!The Telltale Game
* In Episode 1:
** [[spoiler: Marty feels too guilty to lie to Emmett about getting a patent, and confesses.]] Very surprising, considering Telltales' penchant for {{Comedic Sociopath}}s (with even [[WallaceAndGromit Wallace]] tricking someone into impaling his foot on a spike [[DisproportionateRetribution just for kicking down a sandcastle]]).
** Also, when Marty and Doc first re-unite after months:
--> '''Marty''': Doc, we've only been back together five minutes and we're talking about the end of the universe! I've missed that.
* When Doc's locked up in Tannen's police van, Marty tries to pilfer the keys to get him out. Tannen punches him, and Doc yanks Marty through the bars, saving his life. You can also see a [[ContinuityNod wedding band]] on his ring finger. It's nice to know that even though Clara isn't physically present, she's still there in spirit.
* In Episode 3:
** After suffering an [[MyGodWhatHaveIDone emotional breakdown]], [[spoiler:Citizen Brown sees the design for the flux capacitor in Doc's notebook...and begins to [[HesBack recover his true self]]. His whisper of "[[CatchPhrase Great Scott!]]" as he realizes the truth that's been nagging at him all these years -- and his subsequent enthusiasm and joy as he races off to get started on fixing the time machine -- is simply beautiful.]]
** [[spoiler:Marty's father]] deciding to help you. Most of the episode he's shown as a coward and [[spoiler:a voyeur, filming people in Hill Valley without their knowing in order to get brownie points from the Brown administration. Later, when his tapes are stolen, he still refuses to help until you remind him of his father. Eight words: "Never be afraid to do the right thing."]]
* Episode 4:
** [[spoiler:Citizen Brown taking pity on his wife-to-be despite Marty's plan to break them up]]. Slightly dulled by [[spoiler: Edna's role as the BigBad]] up until then, but only slightly.
** Doubling as an Awesome Moment, [[spoiler: Marty's dad punches out police to save his wife]].
* Episode 5:
** [[spoiler: Edna finds true love with Kid Tannen, and even becomes Einstein's dog walker.]] D'awwwwwwwww.
** Even better, [[spoiler: in the original timeline Kid was given a life sentence in prison. Here, he's managed to turn a new leaf, now living a normal life with Edna.]]
** Young!Doc and his father making up for their behavior against each other and also finding out why Doc went into the past: [[spoiler: to give Marty a [=McFly=] lineage book, from Seamus to present]].
** Speaking of why Doc went to the past, it becomes sweeter ESPECIALLY when you find out why he went back to 1931. [[spoiler: Doc had no info about Marty's grandmother Sylvia...because she was under the stage name Trixie Trotter! Thus Arthur eventually married the girl of his dreams!]]
*** [[spoiler: After helping young Emmett to achieve his Hill Valley Expo Demonstration to give him back his dreams of becoming a scientist, Young Emmett asks for an explanation about who Marty is. Marty gives him a future newspaper piece, making him promise to never look at it until 1986 when he will be given the key of the city. After Young Emmett walks away and asks if he will see Marty someday again, Marty answers "[[CallBack I guarantee it.]]". Then Marty witnesses 1986!Doc coming out of the [=DeLorean=] and saying "You have a theatrical way of sending messages."]]
*** Also since [[spoiler: Emmett reconciled with his father, instead of abandoning his old home, he maintains it as a part-time home when not time-traveling. So, instead of the home being sold by the bank, Emmett's just having a yard sale.]]
** Marty and Doc sharing a hug after being separated for a long period of time (to them). It doesn't seem like much till you take into account not only had Marty thought [[spoiler: Doc was dead after fading from existence]] but he was trapped in the past with no [=DeLorean=][[spoiler:, no thanks to Edna disappearing into the past with it]].
* Meta example: [[spoiler:Michael J. Fox]] FINALLY appearing in Episode 5 as William [=McFly=] and [[spoiler:[[MindScrew three alternate future versions of Marty]]]].

!!The IDW comic book
* In issue 5, after Emmett tells Clara about the horrors he encountered in 1985-A, she cheers him up by telling him that [[spoiler:she's pregnant with their first child, and they're going to become a family.]] The look of joy on Emmett's face really sells it.
* "When Marty Met Emmett": the long-awaited story of how Doc and Marty originally met.

!!The Animated Series
* The fact that Doc and his family have come back to present-day Hill Valley in this story, and thus see Marty regularly. Whether or not one likes the series in general, it's sweet that the "Partners in Time" on whom the original films focused have not been split apart.
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