Casey Kasem's American Top 40 as a time machine

For '70s and '80s kids, the syndicated radio show American Top 40 was an iconic weekly ritual. Every weekend, disc jockey (and voice of Scooby-Doo's Shaggy) Casey Kasem would take three or four hours on the radio counting down the 40 biggest hits of the week according to Billboard, from #40 to #1 ("We won't stop until we reach the top"), along with some pop music trivia, corny stories and "long distance dedications." — Read the rest