Television viewing habits around the world

How much TV people watch?
http://encarta.msn.com/encnet/departments/elementary/?article=toomuchtv
A quick summary:
The average U.S. household has at least one TV set turned on for about 7h/ day.
The average school-aged child spends 27 h/week watching TV (some preschoolers watch much more).
Over the course of a year, children spend more time watching TV than they spend in school or participating in any other activity except sleep.
Children's TV shows contain about 20 violent acts per hour.
A high percentage of a child's viewing time is spent watching shows intended for adults: 40 % of a 6-year-old's viewing time, and about 80% of a 12-year-old's viewing time.
The average American child will have watched 100,000 acts of televised violence, including 8,000 murders, by the time he or she finishes the sixth grade.

The kinds of programme people watch?

How Television viewing habits have change in the last 20 years

The positive/ negative effects that these television viewing habits may have on our lives