I was in a TV advert filmed in Perth, Western Australia for a local shopping mall called Karrinyup Shopping Centre. The advert was celebrating the fact that the shopping centre was 5 years old. Some ropey locals who worked in the shopping centre got cast to do this for nothing. I was a paperboy who sold the Daily News for 3 cents a copy after school. (I was saving up to see Star Wars I think.) We skipped around the main mall of the shopping centre singing some tuneless, characterless ditty proclaiming the dire fact about a shopping mall turning 5. The advert lasted for 30 seconds and ran for one week in the Australian spring sometime in the late 1970's on Perth television.

I hope I'm not setting the bar too high for you non-Celeb types here in SE23.