Standing the test of time - British comedy

[attimes_bracing]

I have been going back through my favourite British sitcoms/comedies and trying to work out in my opinion what has stood the test of time;

Allo Allo
To the Manor Born
Blackadder
Are you Being served?
Mapp and Lucia
Only Fools and Horses
The Good Life
Waiting for God
Waiting for Henry
As Time Goes By

Anyone else got any favourites?