In case you wanted the slides from my opening remarks at the Open Source Business Conference, you can access them here. I've stored them with Adobe Share, a cool service powered by Alfresco. (It's also cool that Adobe mentioned what they're using, .)
Unfortunately, I don't yet have the two videos from both days available on YouTube. I have to mux the source because it keeps stripping out the video (leaving only the audio track) when I upload it to YouTube or convert it to .mov, .wmv, etc.
There are some good charts on open-source adoption in the presentation that you might find useful.