On which network did 'Knight Rider' originally air?

In what year did 'Magnum, P.I.' premiere? On which network did 'Hill Street Blues' originally air? In what year did 'Hill Street Blues' premiere? Who created 'Hill Street Blues'? In what year did 'Knight Rider' premiere? Who created 'Knight Rider'? In what year did 'Cheers' premiere? On which network did 'Family Ties' originally air?