The self-defense video that all the gun nuts are buzzing about is this one, from Tucson, Arizona. Home invasions are on the rise there, and some of them have ended with murders. In some others, the homeowners have defended themselves successfully, but I don't think any of 'em have done so with the speed, style, and sheer capability of this guy. At least, not on camera.
The would-be invaders come in, most with pistols, one with a rifle, and get ready to attack -- and are repelled by gunfire from the homeowner, in AMAZINGLY short order. They flee so fast that only one of them bothers to get into the getaway car. It is actually rather like this. Incidentally, the homeowner only shot one of them, but when he shoots at the getaway car he gets an AMAZING grouping on the windshield.
To my knowledge, two of the robbers have been arrested, and the guy who was shot is believed to have fled to Mexico. Reportedly, the homeowner just happened to glance at his security camera and had his handgun loaded and accessible by the front door. And that is why "keep your guns unloaded and locked in the safe" laws suck. (I keep most of my guns unloaded and locked in the safe, sure. But not the ones I've designated "in case of zombies, break glass.")