While we're (sort of) on the subject of public-service-cum-social-engineering advertisments, I should mention my favourite from the genre. Mercifully it never reached our shores, but it was playing in glorious technicolour on the big screen when I first arrived in England. I had been in the country but two days, and then saw this. The film that followed was 'Children of Men', the dystopic pic with eerie similarities to Blair's new Britian. I wanted to go home.

Anyway - the ad:

http://uk.youtube.com/watch?v=Sz-3Ov9PUM0