Chewbacca? To understand the Taser's effects better, police and military are often Tased themselves to experience it first hand, partly so they have confidence in carrying the device, and partly to know it really works.
This soldier has a unique reaction... Chewbacca?
The Taser is available for civilian use right now. Consider owning one, instead of a firearm. They can be legally carried concealed in many states in the U.S. and are not considered a firearm, but can effectively disable an attacker or potential threat, without most of the negative consequences that come along with a firearm.
While viewing training videos can definitely be funny, its effectiveness is very serious.
See the C2 line for consumers here--
http://www.itaser.com/product_tour.html
Here more about ownership and laws:
http://www.itaser.com/common_myths.html