I don't really spend as much time as I should trawling YouTube, but clips like the ones I found tonight make me want to change that. If you were in New York in the late '70s, you might remember a couple of our local TV stations, WOR (Channel 9) and WPIX (Channel 11, a/k/a "11 Alive!"), from before they got bought out by big superstation networks. Here's a bit of footage from those halcyon days. Keep your eye out for John Tesh in the CBS spot.
WOR-TV Channel 9 "Million Dollar Movie" opening credits 70s
WCBS Channel 2 News Promo--1970s
WPIX Giants vs. Steelers promo 1979
WPIX 8 O'Clock Movie close 1978
WPIX 11 New York Action News Opening 1979