I am surprised no one said this one yet, I did see someone put on - You've Got Mail.
Anyhow I was speaking of - Sleepless in Seattle
Someone put on Grumpy Old Men, that is much more of a comedy than a romance/chick flik.
Others to mention.
13 Going on 30
An affair to Remember (hey, I liked it I have seen it at least 3 times)
Against the Ropes (however, it is a boxing movie, but as Meg Ryan is the lead star)
The American President (this one has been mentioned)
Arthur (not sure if this was mentioned)
At First Sight
The Bachelor
The Banger Sisters (however I did not like it, you might be able to sit through it)
Beaches (yeah, I can sit through this one)
Bell, Book, and Candle (very good romance/witch movie - I have seen it at least 20 times)
Bridget Jones Diary 2-Edge of Reason (I did not like the first one)
Chances Are
A Cinderella Story
City of Angels (not sure if this was mentioned)
Curly Sue
The Cutting Edge (great movie, I have see over 2 dozen times)
Defending Your Life (somewhat of a romantic type movie)
Dirty Dancing
Doctor Zhivago (however, I can only sit through this on particular moods)
Electric Dreams (somewhat of a romance)
The English Patient (I have only been able to sit through it once, but it was not bad)
Erin Brockovich
Far and Away (decent chick flik)
Father of the Bride (parts 1 and 2) (comedy romance)
Forever Young
The Ghost and Mrs. Muir
Gigi (yes, I have no problems sitting through this one)
The Goodbye Girl (you should not have a problem sitting through this one)
Home Fries (somewhat of a chick flik)
The Horse Whisperer
Ice Castles (I have no problem sitting through this one, seen it well over 2 dozen times)
Kate & Leopold
Kramer vs. Kramer
A League of Their Own
Lilya 4-Ever (be warned, it is subtitled, and 98% of normal people will have a tear in their eye by the end, not a romance chick flik, more like a real life chick flik)
Love Me if You Dare (be warned, this will be subtitled)
The Main Event (Barbara Striesand chick flik)
Meet Joe Black (this might have been mentioned)
Must Love Dogs
My Fair Lady (yes, I have no problem with sitting through it/every once in awhile)
The Notebook
On Golden Pond (this may be hard to sit through for most)
Pretty in Pink (great 80s chick flik)
The Princess Diaries (I have no problem sitting for either part 1 or 2)
Raising Helen (somewhat of a chick flik)
Return to Me (great chick flik and very easy to sit through)
Sabrina (Harrison Ford version)
Seems Like Old Times (comedy romance)
Sixteen Candles (great 80s comedy romance)
The Sluggers Wife (somewhat of a chick flik, shows a woman trying to be independent)
Somewhere in Time
State Fair (I can sit through this, you may not be able to)
Time After Time (Jack the ripper, but with a twist of romance and time travel)
Titanic
The Truth About Cats & Dogs
Uptown Girls (comedy, not much of a romance but it is a chick flik)
The Wedding Singer (comedy romance)
What's up Doc ? (70s comedy romance)
While You were Sleeping (might have been mentioned)
Wimbledon (pretty darn good/somewhat of a romance)