Some nights, you just want to watch the Doctor and a dalek wrestle in the woods until he pulls out his Sonic Screw Sword and plays it like a flute. No, that's not a euphemism.
According to Dave Hill's blog entry on this video, the explanation is that it's a "modern parody of both "Doctor Who" and this particular sort/era of Japanese TV show." And, yeah, for that purpose it hits the nail on the head. Except for the fact that Cybermen are not Dalek lackeys. Duh.
[via Dave Does the Blog]