Hm... you know, I don't know. Doctor Who is not exactly a huge hit in America, either, so I'm not sure of the likelihood of it making it to Japan. I've certainly never seen it in the video rental places and I've yet to see any hint of it at Comiket, etc. There must be one or two; there are doujinshi of everything, including trains.

Ooh, do! JOIN! WATCH!