I know this is past due, since April Fool's Day is long gone for the year.  However, I missed this one from Blizzard (again) and thought it was pretty funny.  Long, but funny.  If you're a WoW veteran-type person, you'll likely find something entertaining in the "evil patch notes" for v1.11.

Oh.. and I don't want to hear whining from people saying they shouldn't be wasting time on things like this and should be working on the game... phooey!  Game developers are people too.