Last night while i was talking to Owen about what he could do for Auxiliaries for his Tau army, i thought i'd go find some pics of Umbra etc. While doing this is found a very cool and useful list someone has made of EVERY mentioned Xenos race in the game, if the name was said in any bit of lore anywhere he's put it down.
Also, in resonse to Chris's wanting drills for Power Fists... I agree, i was thinking taking screws and filing them etc. to get a desired effect.