It may only be of interest to a small group of people but Jack Emmert (aka Statesman), creative director behind the MMO City of Heroes was recently (maybe a few weeks ago) interviewed by MMORPG.com where he revealed that he was an avid 40k
player and that the staff at Cryptic Studios have an internal tournament in which he is currently undefeated.
That article is here: www.mmorpg.com/showFeature.cfm
Further, he reveals that he plays Tyranids among other armies in a post on the City of Heroes boards, here: boards.cityofheroes.com/showflat.php
I know Dakka Dakka has ties to the video game world and that a number of wargamers play MMOs, too. It appears that at least one game design studio believes that in the Grim Darkness of the Far Future There is Only War!