On which network did 'Ally McBeal' originally air?

In what year did 'Buffy the Vampire Slayer' premiere? Where is 'Buffy the Vampire Slayer' set? Who created 'Buffy the Vampire Slayer'? In what year did 'South Park' premiere? In what year did 'Ally McBeal' premiere? Where is 'Ally McBeal' set? Who created 'Ally McBeal'? On which network did 'King of the Hill' originally air?