43rumors today had a link to the behind-the-scenes video of making the E-PL1 commercial, http://43rumors.com/a-little-bit-of-everything-165/.
So interesting, watched it over and over to see how they rigged the cameras, set up scenes etc. No bluescreens as some people had commented before.

Anyway, at 0:35 and 1:18 there are LCDs that look like remote viewfinders.
How did they do that?  Or are they just playback monitors on a computer?
Looks like there is viewfinder info on the screens.