Slightly disappointed that Friday Night is not Eurovision Song Contest night... So I'll slip this in.
Mouth and Macneal - I See A Star.
View: https://youtu.be/oQMCmmKLCJ0
Had this won, which perhaps it should have, Abba would never have happened. But, those crazy Dutch fellers couldn't resist messing about on stage...
Their football team did the same against the West Germans a few weeks later, with a similar outcome.