Here's the list from Vanity Fair:
1. "When Harry Met Sally", 1989
2. "You've Got Mail", 1998
3. "Clueless", 1995
4. "Bridget Jones's Diary", 2001
5. "10 Things I Hate About You", 1999
6. "Groundhog Day", 1993
7. "Notting Hill", 1999
8. "It Happened One Night", 1934
9. "Broadcast News", 1987
10. "Sleepless in Seattle", 1993
11. "My Best Friend's Wedding", 1997
12. "His Girl Friday", 1940
13. "Down with Love", 2003
14. "The 40-Year-Old Virgin", 2005
15. "Moonstruck", 1987
16. "Four Weddings and a Funeral", 1994
17. "The Apartment", 1960
18. "Amélie", 2001
19. "Much Ado About Nothing", 1993
20. "Annie Hall", 1977
21. "Some Kind of Wonderful", 1987
22. "How to Lose a Guy in 10 Days", 2003
23. "Kissing Jessica Stein", 2002
24. "Something's Gotta Give", 2003
25. "My Big Fat Greek Wedding", 2002
(Hit up VanityFair.com for brief write-ups on each movie.)