Some that are decent (like choking down quiche):
Forget Paris (this is actually the much better Billy Crystal rom-com than When Harry Met Sally because he’s an NBA ref in this film and there’s plenty of cameos from actual players.)
An Officer and a Gentleman (there’s quite a few good martial arts scenes in it. Gere uses some sort of Filipino-hybrid karate, similar to Billy Jack.)
Say Anything (some good kickboxing scenes.)
There’s Something About Mary (some truly hilarious jokes in there. I liked the whole “beans or pork?” gag.)
Miss Congeniality I or II (couple of good fight scenes.)
The 40-year old Virgin (great jokes.)
My Super Ex-Girlfriend (superheroes, but otherwise meh.)
Il Mare/The Lake House (features an original time travel puzzle/mystery.)
What Women Want/Hitch (doesn’t glorify women as all-knowing and all-powerful like other rom-coms.)
The Sweetest Thing (if you’ve never seen it, it’s like the endlessly quotable Monty Python and the Holy Grail of rom-coms. Some of the sight gags are amazing. Check out the scene where two of the main characters are discussing, without dialogue in the distance, how to give a blowjob.)
Those with actual stories:
Any by Jack Nicholson: the dude never misses with his rom-coms. As good as it gets, Something’s gotta give, even Witches of Eastwick all have great stories and drama.
Pretty Woman: Great story, features universal and timeless themes, doesn’t make men out as pigs and/or children.
My Big Fat Greek Wedding: it’s not so much the romantic story that is the star of this film, but the Greek-American culture, which is nearly non-existent in other films. Quite possibly the Godfather of Greek-America.
My Best Friend’s Wedding: Breaks the rom-com mold where the main character doesn’t get the man at the end, and the man doesn’t end up on his knees begging for the woman who has treated him like crap the entire film. Amazingly refreshing, actually.
50 First Dates: Adam Sandler is another one who rarely misses with his rom-coms. My favorite of the ones he’s made, but the Wedding Singer, Anger Management, Spanglish, etc. are all winners.
Recently, I’ve also been borrowing a ton of Chinese and Hong Kong martial arts films from my friends and they all feature romance as a major plotline.