I knew that ABBA rose to fame after winning some contest....  I never put it  together with Eurovision contest.  
Which of course made me wonder, how many other super groups/singers came from the contest.  So I 
looked up all the winners. 
Out of all the winners since 1956 I'd only heard of three:  Abba, Katrina and the Waves and Céline Dion.  It should have been at least four, how Lordi never reached super star household name status I'll never know.  
Rock on dudes!