I hadn't thought of it, but a fake news station could be hilarrious. I know I love the police radio on the main site, so a news station in (I imagine) San Fierro would be great.
In other, I would say Indie/Alternative. Pavement, Massive Attack, Nirvana... those guys may not have been ALL over the radio at the time, but then again neither were the Psychedlic Furs in the 80's.