/ audio books / podcasts
The only podcast I've signed up to is The Archers.
Dum de dum de dum de dum, dum de dum de dum dum....
there is also radio 4 comedy of the week. Although thats more hit and miss since its a "random" comedy show each week.
Radcliffe & Maconie from BBC 6music
Infinite Monkey Cage, also from BBC
And if you're interested in cycling, the Velocast