This video explains the best way to remove the shells from hard boiled eggs. He boils the eggs until half the water has evaporated. While the eggs are still hot, he runs each one under cold water. While he's holding the egg under the stream of water, he raps each one with a wooden spoon to break the shell, and peels them under the running water. The technique shown in this video works very well for removing the eggshell without making a mess.