The breakfast buffet at the Excalibur is horrible!  It is a total rip-off at a cost of over $60 (with taxes) for a family of four.  The eggs taste like they are made of plastic and the bread products are stale.  Our children, who usually aren't very selective, hardly ate anything.  I actually spoke with an unfriendly manager and complained about the food quality.  I've been to other buffets in Vegas that have been fine, but this one crossed the line.