I agree with Only Fools and Horses but I think my all-time favourite is Ever Decreasing Circles. It is gentle, adult humour without resorting to bad language and all the characters are sympathetically drawn. Richard Briers, as Martin, a man with OCD and very obvious, these days, Asperger’s Syndrome (it was not really known about in the eighties but we all knew someone like him) is very clever in portraying a vulnerable, irritating yet kind-hearted character, who always wants to do the right thing whatever the consequences, to perfection and the supporting cast are equally accomplished.