Coupling (UK) was very witty, intelligent and entertaining. If I catch a re-run and I have the time, I will stop and watch the same episodes countless times. Steve, Susan, Jeff and Jane are some of my favourite characters.
Here is a quote from the ever quirky Jeff:
"You know, when I was a kid, I used to write the word 'naked' hundreds of times on a piece of paper, and then rub my face in it." *cue cheeky grin from Jeff with hand gestures*
Ok, I had to add this clip of Jeff, it's one of my favourites (NSFW!)