Perhaps some of you recall the rumor about Pandaren as the new Alliance race, which started circulating around the forums around October.  It was accompanied by a rather believable screenshot, which fanned the flames of speculation.  Well, this April 1st, instead of the usual jokes, Ian of Mac Hall admitted (scroll down to see Ian's news post on the subject) that he'd spent some eight hours modeling work to accomplish the effect.  Seems like a lot of work for a prank, but the final product fit the World of Warcraft look quite nicely.  Only time will tell whether the murloc rumors will have a similar fate!