Afterwards, Grandfather tells his wife that their daughter and granddaughter need space for an intimate talk.
For once, I'm putting my foot down: LET THEM BE.
Grandfather convincing his daughter to get a more updated hairdo and wardrobe. Half of this is meta, as it shows Margaret going from a beautiful yet stodgy Boston Debutante stuck in The '50s awaiting a quiet middle age to The '60s as a sassy, mature mom getting her man back; for the other half, he makes it known that he's thoroughly into the plan his granddaughters are devising.
All of Margaret "Maggie" McKendrick's interactions with Vicky and her mother. She gets her man back and lets on that she is savvier than she looks.
Meta: "For Now, For Always" for Maureen O'Hara (showing why it was expressed about her "that Dame can sing!") and for the Sherman Bros, who wrote it in the style of a Post-World War Two love song.
Sharon and Susan pranking Vicky shows how the girls came together and worked as a team, as well as how much savvier these young twin girls are than her.
Meta: This wasn't Hayley Mills's first movie (the first being Tiger Bay, a thriller, and the second, Pollyanna) but she really personified two different girls with opposing traits and really played up their emotions.
The Lindsay Lohan version
The fencing scene.
What Hallie and Annie do to Meredith on the camping trip. Everything.
After being floated out into the middle of the lake on the air mattress, Meredith delivers an ultimatum to Nick: it's either her or the girls. His response? "Them." When she asks him what he said, he says, "T-H-E-M. Them. Get the picture?"
Meta awesome for Lindsay Lohan, who plays Hallie, Annie, Hallie-as-Annie, and Annie-as-Hallie to near perfection. Whatever later troubles her personal life may have brought, anyone who says Lohan can't act can officially eat their words.
Even more awesome when you consider that it was only her second acting appearance (her first was a few episodes in the TV daytime drama Another World).