Vader Taken Out By Own Lightsaber, Dog
Darth Vader is lord of the Dark Side, second only to the Emperor in his power and command of the more dangerous side of the Force. This apparently means that he doesn't know which end of his lightsaber to use and can be taken down by an enthusiastic dog.
We're assuming that this is the actor's dog, since the minute he hits the ground the dog's just all over him wanting to play. Nonetheless, while we're pretty sure the lightsaber to the family jewels was planned, the cuddle attack was not.
But on the bright side, it is really, really funny. Don't they say that the best comedy comes from improvisation?