None.
Honestly, none. Anytime I try and to watch a "Britcom" I fall asleep.
I defy you to not enjoy this.
Edit: Embedding disabled. Here:
http://www.youtube.com/watch?v=2vbzoJHqf5Y
I haven't seen that one. Thank you.
My list;
1. Monty Python.
The rest in no particular order...
The IT Crowd
The Vicar of Dibley
The Goodies (yes, the Goodies)
Keeping Up Appearances
The Goodies. I remember them. 1970s. "Goodies. Goodie goodie, yum yum." Can't remember the last time I saw the show, though. Probably was the 1970s.