My youngest son loves this commercial at the moment.
So, I hunted it up on YouTube a few weeks back to show him using the keywords "cadbury gorilla" and besides finding out that it was a British ad that was over a year old, more than several enterprising individuals had remixed the drumming gorilla in innovative and entertaining ways. One version involving a Bonnie Tyler classic even then became an official alternative!
Here's one I really liked - great for anyone who has fond memories of the eighties.
And this one was also excellent.
Any other Cadbury Gorilla fans out there?