the thread on taking laptops out of the house got me thinking... Do you all purchase the extended warranties from places like best buy and circuit city? Cicuitcity has one for laptops that covers them in case you spill on them or drop them. But it's $500 for four years yikes, kind of expensive. Anyway, do you think those warranties are worth the money? Have you either used them and been glad you did, or felt that they were a waste of money?