Saw this photo posted on Strobist the other day along with a video detailing the steps in creating the image. It was made by Brandon Voges at Brouton Stroube Studios (fun site to browse) and involves multiple photos and a lot of Photoshopping. Each person in the shot was photographed separately and then it all was pieced together.
I once had a group of students trying to stage an action shot. There was a lots of different things happening at the same time. They spent hours trying to coordinate all the actors to move simultaneously hoping the camera guy would hit the shutter correctly. One person always messed up their cue and so they kept doing it over and over again. The part I remember clearly was one young man whose job was to jump in the air. The next day he was so sore he couldn't do it anymore. They changed their plan at that point.
After watching the video, I thought what a great project idea for a tech lab or a photography class. Of course you'd have to keep your photo "school safe." No paint guns. No jumping up from a trampoline and landing on mattresses. No milk thrown around... at least not in my lab. But if you have access to a digital camera and Photoshop, your students could use the same techniques that would have their friends scratching their heads and asking, "How'd you do that?"
[Initial Source: Strobist: "A Little Light Painting": Nov 27, 2007]
[Image: Brandon Boges; Bruton|Stroube; http://www.brutonstroube.com/]