I'll list my top few, since they are all special in their own way.
With a girl who was for a longtime my girlfriend laus, we were both 16 at the time (4 years ago), she was sat on the couch and I really wanted to kiss her but had only known her like 2 hours. I was totally consumed by how wonderful she was and asked if I could kiss her. We had an awesome kiss, which she still holds in esteem as the best kiss she's ever had. I nailed it 8)
Next was with a girl who I had just started dating, Lyley, and again it was after not long of knowing each other. We were totally into each other, and ended up in some bowling alley playing pool. It as pretty empty at the time, and she did that thing where girls walk RIGHT up to you. We kissed, fast to start, but getting slower and more passionate. AWESOME kiss. Big ups to lyley...
So yeah thats the girls from my two major relationships, and I'm still friends with them both
Current favourite has to go to nina though. I explained how I met her before, but my god kissing her was a thrill. We were in a club that she ahd invited me to, surrounded by her friends and I had just told her I had to leave for a long drive the next morning. She gave me that smile and moved closer, and we launched into an awesome snog. One of those where the world round you starts spinning because you cant believe this sweet wonderful gorgeous girl is kissing you. It blew my mind.
I can't wait til she gets back from holiday and comes to leeds to restart uni 8)