Blood for the Baron!

Have you noticed the stuff based on Dr Who that has been appearing on different series? Kids Next Door gave a somewhat mocking parody with "Doctor Time Space and the Continuum", but we have had straighter tributes with Ben 10's Professor Paradox and, from the recent Transformers BotCon comic, Pyro Ignatius Spark, leader of the Earth-created Autobots.

Has anyone else found any other Doctor expy?