Also Real Life: John Heard was vocally unhappy about working on the first film, considering the role beneath him and believing the film would flop. Upon seeing the finished product, he profusely apologized to Chris Columbus, going so far as to do it on camera during shooting for the sequel.
Home Alone 4: Taking Back The House
The simple fact that a lowlife like Marv was able to find his soulmate in Vera. A woman who, while a criminal, is far out of his league in terms of looks but she seems to genuinely love him for who he is.
Peter and Kate hugging each other when they get back together at the end of the movie.
Home Alone: The Holiday Heist
Alexis and Finn hugging once they manage to defeat the villains.
