To quote Dave:
PBJ is a presentation tool. First, it’s a knock-off of PowerPoint and the like. It lets a user create slide presentations by assembling JavaBeans. Using JavaBeans lets the user create a compelling, interactive presentation that can pull information and media from beyond a static document. Additional tools let a user show the presentation (along with an outline on a multihead system), and record audio and video for playback later.
We’re still in the planning stage, but code is being hacked and the project’s web site is up if you want to check it out.