Abba performs Waterloo in 1974
We could not kick this list off without starting with one of the greatest performances to ever grace the Eurovision stage. Eurovision had always been popular but it was Abba that lifted it into the pop culture stratosphere with their performance that gave Sweden their first-ever win in the contest.
Abba, of course, went on to become one of the biggest groups in the world and their hits remain part of the cultural zeitgeist to this day with stage shows and two movies made based off of their hit songs â and there is every chance a third movie will come along after the success of the second.