I would say make a show that shows how popular radio rock has changed, yet appears to be going full circle over the last twenty five years. In the late 70's -early 80s hard rock was fairly big on the radio. Boston, Foreigner (sp?) etc. were big bands. The mid-80's ushered in an era of radio metal. Ratt, Quiet Riot, Twisted Sister, Bon Jovi, Poison were big. After that, the late 80's-early 90's saw the emergence of Queesryche, Alice in Chains and Metallica. The grunge scene appeared right after that. Pearl Jam and Nirvana were the monsters of that era along with Soundgarden. After grunge, the alterna punk hit big. Green Day was one of those bands that formed that sound. Rap rock, then hit the airwaves (again) with Kid-rock etc. Now it seems like a the hard rock is creeping back in with the poularity of Evanescence, Fuel and Nickelback.
Bryant