In South Korea, there's a new radio station where you can watch the DJ on a video in addition to listening! The portal for the station lets you interact and ask questions as well. Users can enjoy the radio by using portal sites with this kinds of radio widget.
Implications - It might not be too long until this kind of level of interaction is commonplace with radio stations all over the world. The added level of personality would certainly open up radio shows to a larger demographic of people, and by letting listeners participate this kind of show would likely also increase fan loyalty over a period of time.