anotheoldgit
There are no popular PC comedies on television.
I don't know if you've ever seen Extras or The Office, but these are brilliant examples of non-PC comedies which seel by the bucket-load on DVD. Hugely popular and definitely not PC.
Also, look at Little Britain...you couldn't call that PC, now could you?
In fact, ever single successful comedy I can think of nowadays from American's Family Guy, American Dad and Curb Your Enthusiasm, to our own Nighty Night and Peep Show are fundamentally un-PC.
You cannot have PC comedy...it just doesn't work. However, you can be un-PC and funny, as long as the jokes are told with genuine wit and intelligence and they don't rely on the same old stereotypes.
I urge you to watch Nighty Night, which features a lead female character who lies to her neighbours, telling them that her husband has died of cancer, where in fact he's survived. Her reason is that she wants to shack up with her (wheelchair-bound) neighbour's husband...and does so by breaking up their marriage.
Beautifully un-PC, but at no point does it overstep the mark and become insulting to its audience.