Casey's '80s were this week in 1988, with Rickroll at #1. The annoying aspect to this period in chart history was how almost every song in the Top 10 was from a blockbuster album that yielded 4+ hits: Debbie Gibson, George Michael, Michael Jackson, Richard Marx, etc. Tells me a lot about the adventurousness of programming at the time. (Not that those weren't fine singles in many cases.)