A projector with a camera installed so that a presenter can give a live presentation to an audience or class and simultaneously stream that presentation over the internet to a live online audience.  This would work really well for work or schools.  An onboard harddrive or connection to a google drive could save the video with the audio/visual and slides individually or connected so anyone accessing the course on demand could also view the presenter's actions on the slide in live action.

This would work really well for developing an online high school curricula from teachers so teachers around the state could work together to build a really good standard for teaching the course.