[Alf]

Of those that started in this century

Peep Show
Still Game
The Mighty Boosh
Phoenix Nights
Saxondale
Psychoville
Early Doors
Max and Paddy's Road to nowhere
Inbetweeners
Gavin and Stacey
Black Books

And the following continued into this century from the previous century

I'm Alan Partridge
The Royle Family
The League of Gentlemen
Only Fools and Horses
Red Dwarf