Heartwarming / Chitty Chitty Bang Bang

• Dick Van Dyke as Caractacus singing "You Two". He's perfect at playing a loving father.
• Due to circumstances, Mr. Potts ends up dancing with a bunch of buskers. After a false start, he actually gets into it and shows that he can dance. Rather than be mad at him for jumping in randomly, some of the dancers give him some of their earnings as thanks for livening up the show.
• Chitty being turned from a burnt-out heap of old iron into a beautiful car yet again. Further heartwarming moments as Chitty starts up again and as Chitty gets back out on the road.
  Jemima: She's the most beautiful thing I've ever seen in my entire life!
• The following exchange. If nothing else, you get the feeling that Caractacus wouldn't say that last sentence out loud to just anyone. It's a secret that he's trusting her with:
  Truly: I really owe you an apology. You're more than just a father to those two children.
  Caractacus: Nursemaid, private tutor, chief cook and bottle-washer, everything. Except what they really need.
• Caractacus expressing complete confidence in Chitty during the journey to Vulgaria:
  Truly: Where are we?
  Caractacus: Somewhere over the North Sea, I think.
  Truly: Don't you know where we're going?
  Caractacus: I don't, but Chitty does. I think we're in pretty good hands.
• Caractacus and Truly among the hidden children of Vulgaria. They've never met these kids before and technically have no obligation to help, but they take very little convincing, if any.
  • While Caractacus is singing Hushabye Mountain, he stops in the middle. He's trying to tell Peter to not lose hope, but he seems to have lost it himself. Then Truly comes in and continues the song, leading him to join in on the last line and regain his fire.
• This little Brick Joke near the end, right after Caractacus and Truly kiss.
  Truly: (outraged) Well, Mr. Potts!
  Caractacus: (shocked) What? What's the matter?
  Truly: (laughing) Now you'll have to marry me!
• Pay attention to when Jeremy and Jemima are being presented in a cage to the Baron and Baroness. Both have their faces pressed up against the bars, but Jeremy has his arm protectively around Jemima the whole time.
  • Later, when they're locked in the tower, Jemima is sleeping in Jeremy's arms.
• The implication that the (adult) townspeople are just as disgusted by the ban on children as our heroes are. They call after Jeremy and Jemima, with panic in their voices, not to go with the Child Catcher when they see the children running through the streets. In the climax, they charge the castle and give the children a fighting chance against the cavalry.
• While its place in the movie leads up to a very silly punchline, "The Roses Of Success" is an otherwise inspiring song about finding triumph in the wake of failure. A Triumphant Reprise plays after Lord Scrumptious agrees to sell Caractacus's sweets (not for their intended purpose, granted, but he's still blown over by the fact that he's actually created something that works for once, especially after his disastrous pitch earlier in the film). Up from the ashes, indeed!
• Truly genuinely being intrigued by the Toot sweets and telling one of her father's employees to take Mr Potts to show it to her father. She even gives him some verbal encouragement: "Don't let him bully you!" Considering how their last meeting went, it's very kind of her.