DualDisc

I've actually wondered in the past why this hasn't been done aleady. (If it has I missed it.) G's favorite band, Good Charlotte, has put out The Young and The Hopeless as a "DualDisc", a CD on one side and a DVD on the other.

Later: It seems that this is more of a Sony thing than a Good Charlotte thing since Five For Fighting and John Mayer also have DualDiscs available.