Kernel Summit 2010 group picture

I was kind surprised that the photo was taken with everyone's back to the window. I can see it though, if the hired photographer was adding in strobes to match the ambient light from the window.

But if you are the photographer without the strobes, then you are kind of out of luck :( Best you can get are the people exposed properly and everything outside the window will be overexposed.

For those who might be interested in off-camera flash this is a very informative site:
http://strobist.blogspot.com/

Again I highly appreciate the photo and I am not trying to be negative. Just trying to give some ideas for future attempts.