If you are looking for top quality talk radio content. A lot like Pinnacle (tech show featured on some Airlines) but a lot more entertaining and not as presumptuous.
It has quit a following and is excellent entertainment, for your Ipod for example. It is quit information heavy so it is kind of hard to doing anything else while listening to the show.
Usually there are some very interesting and smart guests. A couple of times a year it turns into a travelshow