XM radio

I got XM satellite radio a while ago, and I was interested to see the views of people who had it here.

My question is what is the best talk show on XM. It would be nice if you included a sentence or two about what it is about (& what station it's on).

My friend's car has XM radio and I listen to it whenever I borrow his car. But I mainly listen to the music channels. Try the BBC. :)