I was able to make a math query and see results - a bunch of analysis, the equation plotted on a graph both zoomed in and zoomed out, and a variety of related information. Pretty cool. Wish I could hear more of the video without sound breaking up. I hope there will be a recorded version of it that I can re-watch later when the site isn't so swamped; it's exciting.
EDIT: The Wolfram rep on the chat said that justin.tv will have an archive of the video available, for those of us who want to watch it later.
This was a totally geeky exciting fun night. This is why I love working in tech.