OK, here's my list of the top 5 romantic comedies of the last 10 years. I couldn't come up with 10 I truly loved. Cast you vote in the poll. And let the arguing begin.
My Best Friend's Wedding: Julia Roberts and Cameron Diaz battle for the love of Dermott "Dishrag" Mulroney. (Or is that Dylan McDermott?!) Of course, the movie's all about the gals, and Rupert Everett. And it includes one of the best karaoke/sing-along scenes. Say A Little Prayer, indeed.)
Love, Actually: Hugh Grant and a cast of a thousand Brits (Colin Firth, Emma Thompson, Keira Knightley, Bill Nighy, etc.) jump through hoops and airport metal detectors in pursuit of love and laughs. This one is my personal fave.
50 First Dates: You can't lose with Drew. She's adorable and funny and sexy in this Adam Sandler vehicle about falling in love all over again every day. And it's in Hawaii, so you can't beat that.
Return to Me: Most people won't remember this one, which starred David Duchovny as a man who falls in love with the woman (Minnie Driver) who received his wife's heart. It's an underappreciated weeper, and I defy anyone not to lose it during the scene where Duchovny unravels, hugging his dog.
Honorable mentions: Eternal Sunshine of the Spotless Mind, Kissing Jessica Stein, About a Boy (though it's not a strict romantic comedy), Titanic (same thing) and The Wedding Singer.