This is one of those movies I never get tired of watching. I love the chemistry between Tom Hanks and Meg Ryan. Which reminds me, check out Joe vs the Volcano (1990) and Sleepless in Seattle (1993).
You've Got Mail (1998) was written and directed by Nora Ephron (Yay, girl power!) The film is a modern remake of The Shop Around the Corner (1940) which was also made into a musical In the Good Old Summertime (1949). Sweet and funny, it's the perfect romantic comedy.