I love the comedy-drama series Green Wing.
Rather than try and explain the plot, I’ve decided to simply link to Wikipedia entry for it.
Here it is: http://en.wikipedia.org/wiki/Green_Wing
And here are some samples of its humour:
There’s a great box set of ALL of the episodes and extras available here:
It’s a fantastically funny series. If you like Spaced, Shaun of the Dead, Hot Fuzz, Flight of the Conchords, Black Books, The Comic Strip Presents…, Extras, The Office, then you’ll like Green Wing.