Tired of waving your hands or making strange faces at your teenager who is listening to his/her iPod to get their attention?
Introducing "voiceover iPod" with new Bluetooth connectivity allowing parents (or other friends of the iPod Wearer) to converse with the iW by introducing a short-range Bluetooth
signal whuch replaces the current iPod track, quickly fading down and pausing the track, and allowing (more-or-less-normal) conversation to occur.
Mom, Dad or friend simply places an earbud mic/headphone unit on and emits a signal which locates a nearby iPod and activates the special circuitry. (Could be integrated into a cellphone, and have a special number to call, or just works by proximity.)
When the conversation has ended, the voice fades out, the music fades in, and teenager goes back to communing with his/her current favorite .mp3.