Any cool technology is fancifully indistinct from magic to a sufficiently geeky viewer.
I have skype. My name on it is pgunn01. You can call me (note that I prefer short chats because I'm like that, and I'll only answer when I'm at home because my laptop's sound driver isn't set up well enough to do skype). The sound comes out my TV/LCD, but it sounds like it comes from the air. The microphone is lying on the TV in such a way that any speech in the room is heard by it. It's kind of freaky.