I love a good kissing scene, makes me feel all fuzzy, but also very jealous 
Some of my favorites are
The episode of Miranda where her and Gary keep trying to kiss, but keep getting interrupted/broken off.
The ugly truth lift kissing scene.
50 shades (yes I know, but I love Jamie Dornan)
The friends episode where Ross and Rachel first kiss.
There are lots more, but they are the ones that come to mind.