Mentioned in the Steptoe thread a bit, and it's my personal favourite sitcom (Sid James is brilliant), so I thought it deserved its own one.
I know it's probably not everyone's tastes, but I just really love it. Hilarious, especially Sid's song in S5E1, They Don't Write Songs Like That Anymore. The scene just cracks me up every time. Their expressions can't be beaten.
I love Bertha Brown,
She's the biggest girl in town,
It's her bust that made the fellas all turn round.
It's a pity that she's lop-sided,
It's the way that they're divided;
One ways nothing and the other weighs 10 pounds.