FMQB has an incredible interview with XM Satellite Radio's Chief Creative Office Lee Abrams. It covers everything from O&A and CBS Radio, to Lee's incredible history, to the faults (and advantages) of terrestrial radio, and to even (gasp!) the current state of XM's stock. It's quite the worthwhile read.
I personally just love how Lee isn't afraid to tell it like it is. Spit in the face of convention and do what you feel is right. Gotta respect that.