Your fellow EDM classmate, Martha Yim, really set the bar high with her google presentation. By looking ahead and exploring the tools that y'all created accounts for on the first day, she was able to overlay audio and video into her presentation about the Kennedy Space Center by combining a Screentoast with her google presentation document. To watch her outstanding example of a presentation click on the screenshot as shown below.
I happen to know that Martha is very approachable, and has all kinds of knowledge ready to be pried from her finger mind. So explore her blog, get new ideas, and ask her how she produces what you find. Even more importantly, ask her what she's up to next! The suspense is killing me!