NIKKO R2-D2 DVD PROJECTOR
OK, now THIS is fine use of existing technology! This 200-cm tall replica of C-3P0's diminutive longtime companion can project DVDs onto a wall or ceiling (but not holograms of a young Princess Leia, unless you happen to be watching the "Star Wars" DVD.) It's fitted with a bevy of other features, like an IPod dock, USB inputs, integrated stereo speakers and even a Millenium Falcon-shaped remote control that you can use to guide it around the room. It looks, sounds and moves shockingly like its movie counterpart.
Hold onto your lightsabres, though -- this wee droid will set you back at least $2,500. Do you know how many power converters that'll buy you at Toshi Station?