This show is just so wonderful. The comedy is written in such a great way, with Jeff being one of the funniest characters ever in a TV-show. In his absence, the show never really reached the high standards of the first three seasons, even though it still was great fun.
The giggle loop, the one-leg, the "how can you say thigh to a person with an interview", and everything else Jeff did in this show is pure genious. I am even smiling while writing this, thinking about all the great times I had with this show.
I can recommend Coupling (UK)to anyone.