You could participate in local, regional, or even national polls, easily with your remote control. This could make all voting done from ones home. All with a remote. Students could set in on lectures happening miles away and participate in the questions and answers. Imagine the information open to both students and teachers.
Interactive tv is hoped to be avaliable within the one year.
In many countries it is already being used. Many large companies are working together to make Interactive TV avaliable. Then there is the monthly fee.