Most of the time I listen to CD's because I like to have control of what I'm listening too. When I listen to the radio, It's usually the local college stations because they play stuff that's new and different. I can't listen to any talk radio or sports...
I have a wide range of musical taste but when I'm driving, it's usually someting active, techno, rockin'. My buddy is a professional DJ and he burns me DJ mixes for continuous entertainment!