Misc: how many squares are on a checkerboard?

Questions

What 1949 book was a bestseller 35 years later?

What 1958 eddie cochran song became his biggest us hit and a rock classic?

What 1969 sex spoof had a different author for every chapter?

What 1980 Vietnam flick was re-released in 1987?

What 1988 movie reunited william hurt and kathleen turner?