There are several keynotes and classes on offer covering a range of products and some of them shouldn't be missed including the opener from CEO Carl Bass, and CTO Jeff Kowalski discussing trends in design and technology.
Kean Walmsley will be covering reality capture in with Kinect and AutoCAD of which you can get a sneak preview of on his Through the Interface blog.
The ubiquitous AutoCAD 'evangelist' Lynn Allen will be demonstrating 60 tips in 60 minutes, and you can catch her AU 2013 primer presentation on YouTube right now:
The complete list of available streams can be found here. I'm sure you won't want to miss any of them and given they'll be going live at USA Pacific Time (-8:00 GMT) you won't be irking your boss while on the job.