I must be the only person who loves Endermen and all their griefing.
I have also had many a lulz based on the Enderman and their doings. As a server admin though we can not have built in griefers and I will be looking to disable them on our server. (At least in their current iteration, if they get changed to only move 'soft' materials [sand, dirt..] then I would reconsider)
See new post for the future of the IC Minecraft server
By the way, I will nerf the endermen block carrying. It was a horrible idea.