There are some spoilers here so beware. When we first saw the Emperor send out those blue lightning bolts at Luke Skywalker in RETURN OF THE JEDI, it was truly a defining moment in the STAR WARS saga - not to mention a fine piece of filmmaking. Then we saw the MYSTERY trailer that was exclusive to the EPISODE I DVD (if you have internet access) and there, again, we saw that crazy lightning. However, the source of that lightning was not seen. It's a fact that has yet to be actually confirmed, though many suspect they know who the source is and are probably right. But just what is that lightning and how does one use it? Find out here.