In a medium bowl, beat the Neufchatel cheese until soft. Stir in Cheddar cheese, sour cream, green chiles, Worcestershire sauce, garlic, green onions, artichoke hearts, salt and pepper.
Slice the top off the bread, and hollow the bread out. Spoon cheese and artichoke mixture into the bread bowl. Replace the top of the bread, and wrap entire bread bowl in aluminum foil.