Black Dahlia
A Seasoned Witch
That's what I thought. Aha single-handedly killed this thread.
I would add Falco to this list. He was famous way before "Amadeus" with songs like "Der Kommissar" and remaind successful with hits like "Jeanny", all in the 80s not to mention his later success.
Classic one hit wonders are bands like Europe with "The Final Countdown" and Vanilla Ice (in the non-rock department).
Agreed with almost all of that, except Europe had four hits in the US alone, three of which were in the top 40, from 1986 to 1987.
Remember the power ballad "Carrie"?