Back to the Future (film)/Heartwarming

Part I:

I loved the little moment just after George knocked Biff through the ringer, then kindly asks Lorraine if shes alright. It's just so cute!

George: Are you okay?
Lorraine: (silently nods)

- And the way they walk off together! CUUUTE!
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.

Part II:

I always loved the fact that what started everything in the second movie was the fact that Doc wanted to save his friend's (Marty) future family. I found that rather endearing.
The reason Marty was so devastated over the loss of his father in the new timeline? He'd recently gotten to know his old man better for a week. In that time he learned how much they had in common, and that they were both insecure teens.
- Also counts as a Tear Jerker moment.
My personal favorite from this movie was something I didn't even notice the first time through. When Marty talks to Old Biff in the Cafe 80's and Biff makes fun of "Marty Jr." for having a complete loser as a father, Marty reflexively insists George Mc Fly is no loser (as he very well knew after the first movie). Biff's immediate response is: "I'm not talking about George Mc Fly!" He could have made fun of George as well (as in "Well, yeah, him too, but I meant Marty Senior") if he'd wanted to, and it's glossed over with all the rest of the future antics, but I thought it was really sweet that deep down, cranky Old Biff truly respected George Mc Fly.

Part III:

Doc's reaction to seeing Marty in 1885.

Doc: Marty, I gave you explicit instructions not to come here but to go directly back to 1985.
Marty: I know, Doc. But I had to come.
Doc: But it's good to see ya, Marty.

Emmett and Clara at the telescope.

Clara: I think the lens may be out of alignment, because if you move it this way, the image turns fuzzy, see? (moves closer to Emmett) But if you turn it ... the other way...
Doc: (gazing at Clara) ...everything becomes - clear.

- Bilingual Bonus: Clara is Latin for clear.

The Telltale Game

In Episode 1: Marty feels too guilty to lie to Emmett about getting a patent, and confesses. Very surprising, considering Telltales' penchant for Comedic Sociopaths (with even Wallace tricking someone into impaling his foot on a spike 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 missed that.

In Episode 3: After suffering an emotional breakdown, Citizen Brown sees the design for the flux capacitor in Doc's notebook...and begins to recover his true self. His whisper of "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.
- Also from Episode 3: Marty's father deciding to help you. Most of the episode he's shown as a coward and 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 has Citizen Brown taking pity on his wife-to-be despite Marty's plan to break them up. Slightly dulled by Edna's role as the Big Bad up until then, but only slightly.
- Doubling as an Awesome Moment, Marty's dad punches out police to save his wife.
Episode 5: Edna finds true love with Kid Tannen, and even becomes Einstein's dog walker. Dawwwwwwwww.
- Another gems from Episode 5, include Young!Doc and his father making up for their behavior against each other and also finding out why Doc went into the past: 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 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!
  - 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 "I guarantee it.". Then Marty witness 1986!Doc coming out of the DeLorean and saying "You have a theatrical way of sending messages."
  - Also since 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.
    - Er, not exactly. Doc's home in 1985 isn't his family mansion - it's his garage. (The one he flees to in the first movie after Marty first tells him he's from the future) A newspaper clip in the movies indicates the Brown manor burnt down sometime after the fifties (presumably because Doc had already spent his entire family fortune by that point and needed money to continue his research, assuming he didn't just blow the house up by accident. The Doc's a good guy at heart, but after ripping off Libyan nationals, he's probably not above a little insurance fraud...) This is why Marty had to look him up in the phone book in 1955, instead of just going right to his shack.
- Marty and Doc sharing a hug after being seperated for a long period of time (to them). It doesn't seem like much till you take into account not only had Marty thought Doc was dead after fading from existence but he was trapped in the past with no DeLorean, no thanks to Edna disappearing into the past with it.