Modern Day Discipline

On day when returning home from work my wife proceeded to tell me that she had been called into the principal's office because of the things OUR SON had done at school that day. We agreed that he should be disciplined the same was I was disciplined when I was his age: being sent to my room without supper. But in my son's room, he has his own color TV, telephone, computer, and CD player. So what is a parent to do in this day and age? We sent him to MY room!