In 2005 , the EBU had agreed with the Danish broadcaster , DR , to produce a programme to celebrate the 50th anniversary of the Eurovision Song Contest . The show , entitled Congratulations : 50 Years of the Eurovision Song Contest after Cliff Richard 's entry for the United Kingdom , was held in Copenhagen , and featured a competition among fourteen of the most popular songs from the last 50 years of the contest . A telephone vote was held to determine the most popular Eurovision song of all-time , which was won by the ABBA song " Waterloo " ( winner for Sweden in ) . The event was hosted by the 1997 Contest winner for the United Kingdom , Katrina Leskanich , and Latvia 's representative on its debut at the 2000 Contest , Renārs Kaupers
2000 Contest
Eurovision Song Contest 2000
Eurovision Song Contest