Here's the answer to the 80s Timeline:

1)Walter Cronkite announced his retirement from the CBS evening news.

2)People all over the country were wondering who shot JR on Dallas.

3)and Leslie Nielsen was serious, and don’t call him Shirley, in Airplane.  In 1980 This song was released which was the most successful of all Blondie singles in their native USA. It was the best-selling single of 1980.. here is “Call Me”