Alcohol also = insincerity in my book.
They can vote on us, like we’re on American Idol.
1-866-LUVR-TDN, ladies. 
Alcohol = the anti-memento. 
seymore and audrey singing “suddenly seymore” after the dentist disappears in little shop of horrors
tony and maria on the fire escape in west side story
for the most erotic scene: the train scene in risky business
I kinda liked the scene in the first Lord of the Rings where Arwen chooses to give up her immortality for Aragorn. All that ethereal music and light.
Eugene Levy buying a rose for Catherine O’Hara, and their final kiss, at the end of “A Mighty Wind.”
Grace Kelly swooping in on James Stewart in “Rear Window.” (although that might be less romantic than it is just sexy.)
And for us guys of a certain persuasion (not that there’s anything wrong with it!), the slow dancing scene at the end of “Beautiful Thing.”
**Bull Durham ** - I actually think the “What I believe” speech to be very romantic, but I’ll go with the montage towrds the end.
**Love, Actually ** - The guy standing at the door with the storyboards, telling the wife of his best friend how he feels.
Not a movie, but the episode “I Will Remember You” - Angel - Where Angel gives up everything to save Buffy’s future.
Well, there was this one scene in Debbie Does Dallas, but it might be that I’m not very romantic.
John Wayne grabbing Maureen O’Hara as she flees his cottage, spinning her around, then pulling her close and kissing her in The Quiet Man.
I think the scene in Groundhog Day when Phil makes the ice sculpture of Rita. The whole “You like boats but not the ocean…” speech.
I’ll second Crash Davis’ soliloquy from Bull Durham, the “we’ll always have Paris” speach from Casablanca and add the climax of * The Sure Thing*, “We braved many hardships: floods, starvation, show tunes” (which I’m sure I misquioted but that’s the gist of it.)
Empire Strikes Back:
Leia: I love you!!
Han (being lowered into the carbonite): I know"
Terminator:
Sarah Conner and Kyle Reece making sweet love in the crappy hotel while hiding from the Terminator.
American Pie movies:
The various romantic scenes between Jim and Michelle. In particular his proposal and the band camp scene with the trombone.
The Rock
Carla (after revealing she’s pregnent): You didn’t mean what you just said, did you?
Stanley Goodspeed: When?
Carla: Just right now, when you were talking about bringing a child into the world, and how it’d be an act of cruelty.
Stanley Goodspeed: I meant it at the time.
Carla: “At the time”? Stanley, you said it seven and a half seconds ago!
Stanley Goodspeed: Well… gosh, kind of a lot’s happened since then.
Swingers
Mikey blows off the ex-girlfriend he’s been pining over for the past six months to take a call from Heather Graham.
Spencer Tracy’s final scene in Guess Who’s Coming To Dinner when he blesses his daughter’s marriage by talking to the other five about what Katherine Hepburn has meant to him. Her teary eyes were my cue to do the same.
I’m not the least bit surprised, considering they are widely considered “chick-flicks,” and many guys (including myself) probably have never sought them out as a result. That’s no offense if you like them, but an easy explanation for why you aren’t getting many comments about them.
No offense taken. They’re chick flicks, but I think they’re so strong as to cross gender lines with ease.
If you were lucky enough to take a first date to one of these when they first came out, you could confidently walk out the theatre thinking “I am soooo gettin’ some!”
Not to mention that there is nudity…nice nudity in both movies. It’s a win-win! 
Pretty much all of Clive Owen’s scenes in Closer.
[sub]seriously though, another vote for the scene in Love Actually with the guy and the storyboards.[/sub]
Can’t really say I have an all-time favorite or anything, but the last scene in Spider-Man II is a good one IMO, when Mary Jane shows up at Peter’s apartment. I’ll avoid saying anything more for fear of spoilage.
The scene in It’s a Wonderful LIfe where George (Jimmy Stewart) and Mary (Donna Reed) are talking on the same phone.
For different reasons, they are trying to keep their feelings hidden (George because he wants to leave and see the world, Mary because her boyfriend is within earshot on the other end). The forced proximity makes this a lot harder. The tension is incredible, and when they finally drop the phone and fall into each others’ arms, it’s breathtaking.
Things didn’t often get that hot onscreen in 1946.
Seriously though, me too.
And the Wisconsin scene was a nice fantasy scene.