Do you remember the yearly network promo themes they used to do? They would compose songs about the network (sometimes these were rehashed versions of old hits) and would start showing these in late summer to build anticipation for the fall season. Often this would be the first hint of what new theatrical films would premiere that year, as clips from those movies would be edited in.
This is probably the first one I remember when they started getting more elaborate. Not content to just show edited together clips, ABC in particular started filming location shoots with some network stars interacting with 'regular people.'
Unfortunately we have lost some of the faces in this promo.