It worked quite well. Most of the questions were relevant and a few were rather softball, but the overall concept was a major step forward for democracy; a nice example of government by the people.
The highlights? The questions on political dynasties (Clinton's answer was classic); how long we'd remain in Iraq after the inauguration of a Democratic president in January of 2009; the Dafur situation; and the question from the snowman about global warming. :-)
Leaving me scratching my head? Why the Iraq questions didn't come first and foremost.
You can see the questions asked here.