Here's what I put together. It's a walk through on how BP used Twitter, YouTube and crowdsourcing ... and how users used them to hijack the story and do what BP couldn't: engage, express emotion, try cleaning up that mess. There are also examples of how other companies in a tight spot handled their situations with more grace.
The presentation in English:
Et en français :
Feel free to use 'em and share, with appropriate credits, as you like.