Let's see, some old ones from the '60s. Shows tended to have big orchestral intros, like movies. Two of my faves:
Bonanza
http://www.youtube.com/watch?v=mjdRgBAY278
Voyage to the Bottom of the Sea -- the best. Very cool graphics for the time
http://www.youtube.com/watch?v=h0-x7MUYmns