Well, my obsession before L&C (way back in the misty dawn of time) was the movie Speed... the most emotional moment was when they realized that Annie couldn't escape something that would probably kill her -- Jack could have escaped, but instead he stayed with her... <waffy sigh>
Okay, so that didn't involve a kiss, but there was a very nice one a little later on...
I like your SG-1 choices, Labby -- Window of Opportunity was so much fun.
One of my favorite L&C kisses is in Ultrawoman -- the "alley kiss" -- it's not hugely passionate or anything, but I love the sense of partnership.
PJ