The Evian advert with the roller skating babies.
And there was a Maxell ad from the early 80s featuring Pete Murphy from Bauhaus sitting in a darkened room looking mean and moody listening to
Mussorgsky’s Night on Bald Mountain.
‘Everyone’s a fruit and nutcase’ starring Frank Muir
Castrol GTX - Liquid engineering
Whooooooaaaah, Body-foo-ooorm! - gets in my head every bloody time I pass them in supermarket.
On a similar note there was one with Claire Rayner espousing the benefits of new Always ultra towels with their slim size and wings (blue liquid also featured, of course).
I clearly watched plenty of ITV as a child.