I always thought Ray had predicted rap and techno in F451, the dumbing down of music, and the in-your-face repetition. I always imagined the Denham's Dentifrice commercial to be some kind of over-the-top techno song, and when I stumbled across the youtube dj known as Pogo a few months back, one of his songs jumped out at me, and I was like YES! THAT is exactly how I always pictured the Denham's Dentifrice commercial! Here's the link:
https://youtu.be/F-RH6HvgPJU

I always thought of the dentrifice ad as being spoken as if by a carnival barker rather than a smooth announcer voice but am unable to find any good examples right off. This works well, too.

I can see that. This comes to mind:
http://www.youtube.com/watch?v=e2nPZOEtPY4&t=2m26s