If I could, I would have all the my home tech hidden out of sight. This includes, computers, dvd players, digital set top boxes and speakers. While in wall speakers are meant to solve this dilemma of mine, the problem is that they are never really invisible. No matter what manufacturer you choose, there is always a visible speaker grill that goes over top.
Enter Lucidity transducer speakers from the same company responsible for the Seura mirror TV. Rather than move a cone, like traditional speakers, the transducers energize the drywall itself turning your flat wall into the speaker. This is the perfect solution for my idea of a design oriented home theater setup but my guess is that you will be paying a hefty premium over regular wall mounted speakers.
-via Born Rich