Broadcast Power? Wireless Energy?

Todd asks: "Today I was thinking about all the new wireless networks that are being offered out there (Apple's Airport, whatever the Dell thing is called, etc.). But, do any of these toys really do much good? If you afford to have power chords going all over the place, why not a phone or ethernet cable? My question is this... Is there a way to have wireless power sources? A base station could be set up in a person's house or place of business and then it would beam energy to the receiving source. I couldn't think of any laws that would allow this, but, then again, I'm not majoring in physics. I have no idea of how something like this could be done, but I do remember reading an article that said NASA plans on putting a huge solar collector in space that would beam energy to a plant on earth that would convert that energy to usable energy, so it got me thinking. Anyone know anything about something like this?" This has been a staple of a lot of sci-fi for as long as I can remember. How close are we to making this a reality? What dangers might such technologies create (as we are only now looking into the dangers created by cell-phones)?