Heat oven to 350 degrees F.
In a large bowl, mix together the cream cheese, mayonnaise, mozzarella cheese, pepperoni, tomatoes and olives. Spoon into 6-cup baking dish.
Bake at 350 degrees F for 30 minutes, until lightly browned and bubbly.
Allow to cool slightly. Serve with bread pieces for dipping. Makes about 6 cups.