Wulf Design owner and 3D print blogger Larry James is offering a "3D Print & Design Workshop" on April the 24th, for any readers in the Seattle vicinity. The session is being offered through the Seattle Free School.
In the four-hour session, Larry will provide an introduction to 3D printing using a MakerBot printer (perhaps his own, #214, pictured above?) He'll go over the history of 3D printing, focusing on the open source projects. The plan is to have the class collaboratively build a new 3D object and even print it out on the MakerBot.
If you're near Seattle, this sounds like a great session.