Mark Gatiss is apparently not content with being a regular writer on Doctor Who and the man in charge of An Adventure in Space and Time, the 50th Anniversary docudrama about the birth of the show.  Nor does he seem satisfied being the writer of four Doctor Who novels and an actor to have appeared on screen twice in the new series, and therefore lying somewhere quite near the centre of the web that is Who fandom.  It seems he might be equally discontent at being the co-producer, along with Steven Moffat, of the hit show Sherlock, which has just about as many fans as chocolate.  Really, really good chocolate.

Why do I think this?  Well, why else would he now be joining the cast of Game of Thrones - probably the most widely popular fantasy television series ever - for its fourth season? He'll be appearing on the show next spring as an as yet unannounced character, securing access to whole swathes of previously un-Gatissed fans.

Oh sure, some will say that it's a wise move for a man always wanting to break into new areas and seeking new roles to act, and yes, he's probably a fan, but surely, these reasons are too obvious.  No, the only reasonable conclusion is that Gatiss seeks to dominate all Geek fandom.  Just you watch: next he'll be writing a superhero movie...