Not too embarrassing, but I love You've Got Mail. The scene where Kathleen (Meg) is closing the door to her bookstore "Around the Corner" and she has a flashback of her as a little girl dancing with her deceased Mother. That tears me up every time! I've watch this movie pretty much every time it's on and have it on the DVR.
Another one I love with Meg Ryan is Addicted to Love. The strawberry scene with her French ex is hilarious!
whatever I too love zombie flicks especially George A. Romero's. I also watch Shaun of the Dead every time I catch it on.