Turbine has added a new feature over at the official Asheron's Call 2 website.  You may now see the leaders overall and per server in the areas of experience and crafting.  It's quite interesting to note that, as of this post, the top overall XP champ is named "Zero Z" (who, presumably, is getting zero ZZZs each night) and the overall crafting champ is named "Gettyn Phattre" (which tends to happen to people who do little aside from play MMORPGs). 

You can view the XP Leaders list and the Crafting Leaders list by clicking on the respective links.