Mitch: You can slug me in the eye any time you want.
When Sharon and Susan realize they're twins. Susan drops down on her bed in tears, clutching Maggie's picture. Sharon comes back into the cabin and touches her on the shoulder. Susan then sits up and the girls hug. They then have this exchange:
Sharon: I didn't know what to say.
Susan: Neither did I. (long pause) Golly! Sisters!
Lindsay Lohan version:
Annie as Hallie exclaiming "Finally!" when she meets her father for the first time.
Chessy's reaction to discovering that "Hallie" was actually Annie.
And the flip side: Hallie telling the truth to Elizabeth.
Elizabeth gets the truth out of Hallie in a sweet way, by playfully tickling her.
Elizabeth: Oh, I see, and where might Annie be? Hallie: In Napa, with her father, Nick Parker.
When Chessy meets up with Lizzie after so many years, Chessy greets her with "Hi, you probably don't remember me..." Instead, Lizzie gives her an enthusiastic greeting and a kiss on the cheek.
"I knew I always liked her!"
When Sammie bolts towards Hallie in the hotel elevator and she squeals out his name.
"T-H-E-M. Them. Get the picture?"
Natasha Richardson's speech at the end of the movie, and Dennis Quaid's response.
Hallie: It took us around thirty seconds after you guys left for us to realize we didn't want to lose you two again. Lizzie: [wide-eyed] We? Nick: We. I made the mistake of not coming after you once, Lizzie. I'm not gonna do that again, no matter how brave you are. Lizzie: And I suppose you expect me to just go weak at the knees and fall into your arms and cry hysterically and say we'll figure this whole thing out, a bi-continental relationship with our daughters being raised here and there and... you and I just picking up where we left off and growing old together and... and... C'mon, Nick, what do you expect? To live happily ever after? Nick: Yes. To all of the above. [tenderly] Except you don't have to cry hysterically. Lizzie: Oh yes I do! [cue "Shut Up" Kiss and truly epic snog]