Heartwarming / The Lion, the Witch, and the Wardrobe
Aslan's resurrection. Readers will likely have a lump in their throat either in the book where Aslan joyfully rumbles "Yes! It is more magic" or in the film where he's silhouetted by the sunrise.
Lewis' opening letter to his goddaughter, saying that by the time he's done writing the book she'll probably be too old for it (which, given the book's reception, was ultimately probably not something he even needed to worry about), but eventually she'll be old enough for it again and can read it back to him.
I wrote this story for you, but when I began it I had not realized that girls grow quicker than books. As a result you are already too old for fairy tales, and by the time it is printed and bound you will be older still. But some day you will be old enough to start reading fairy tales again. You can then take it down from some upper shelf, dust it, and tell me what you think of it. I shall probably be too deaf to hear, and too old to understand, a word you say, but I shall still be
—your affectionate Godfather, C. S. Lewis
Lucy and Susan being with Aslan to comfort him when he goes to die on the Stone Table.
There's also the scene where Aslan and the girls invade the Witch's castle and restore all the petrified victims of her evil magic. There is a joyous power to see that there is little harm that the Witch can do that Aslan cannot undo.
After the Pevensies are hiding in fear of an approaching sleigh (presuming it could be the Witch), Mr. Beaver braves a look and then merrily tells everyone to come out. It turns out the sleigh is Father Christmas' instead, who is finally able to enter Narnia after so long and he has presents for everyone.
That beautiful scene with Rumblebuffin-a literalGentle Giant, who, when Lucy offers him her handkerchief, takes it and rubs his face. This would be heartwarming enough as it is...and then Lewis points out that, seeing as he's a giant, it's probably of barely any use to him at all, but he earnestly thanks her for it.
Mr. Tumnus and Lucy holding hands at the end.
Just look at Lucy's face when Aslan calls her "Queen Lucy the Valiant."
Peter being a good brother and putting Lucy's coat around her shoulders when she gets drenched. Awww...
The first stone victim the girls see in the Witch's castle is Mr. Tumnus. Unfortunately, in sharp contrast to the book (when she knows Aslan will resurrect him) Lucy starts crying, thinking he's dead and Susan comforts her, kissing her on the head in a very sweet and motherly fashion. Then, Aslan turns him back. Cue hugs all around.
Also when he is turned back from being stone, he falls into Lucy's arms, and she is the first person he sees. Lucy then attempts to introduce Susan to him but Susan interrupts her saying "Mr Tumnus, I know" and throws her arms around the faun she's never even met.
Anytime the Pevensies hug. Especially Peter in tears after Edmund comes back from the dead hugging his brother.
The heroes are about to charge into (a seemingly hopeless) battle. Peter shouts "For Narnia and for Aslan!" as they do.
"Are you with me?"
"To the death."
"We just want our brother back."
"Once a king or queen of Narnia, always a king or queen. May your wisdom grace us until the stars rain down from the heavens."
And when Lucy gets dubbed "the valiant", the lock of shocked glee on her face is utterly adorable.
There is a small moment where Mrs Macready takes Lucy to get some cocoa. Although it's at the professor's orders, she still comforts Lucy. It seems that she may be a stern housekeeper, but still will feel empathy for a crying girl.
The Professor too, when Lucy clings to him while crying. He's very surprised but he takes care not to distress her.
The Professor's talk with Susan and Peter.
The Professor: She's your sister, isn't she? You're her family. You might want to try acting like one.
Lucy and Susan bonding right before Maugrim attacks them. Susan apologises for not having as much fun with Lucy as she used to. The two sisters then have a brief waterfight. Aww.
In the hunt scene before the Pevensies return to their normal lives, Edmund's horse seems to be having trouble so he slows down briefly. The horse is then revealed to be Phillip, the horse Edmund learned to ride on; apparently Phillip forgave him for calling him a "horsey".
This is significant in that Talking Horses are only supposed to be ridden in times of great need (i.e. battle or some other such crisis) as they are sentient and sapient creatures. The fact that Phillip is still carrying Edmund around, on a hunt of all things, tells us just how close the two must be.
A lot of moments Peter has with Lucy. He is the first to offer an apology to her after visiting Narnia himself. When boarding the train he leans down to comfort her. After some initial reluctance, he happily starts counting to play hide-and-seek at her suggestion. And he stops to give her a piggyback when he, Susan and Lucy are travelling with the beavers.
The Pensive's waving goodbye to their mother. In the book their parents were barely mentioned at best. Here we actually see her say goodbye to and hug them individually, and the Pensive's all squash together to lean out of a train window and wave goodbye to her from the station.