Idol, 49, would not normally have wanted to tarnish his hard rocker reputation, but decided it would thrill young WILLEM to see him in a film with his son's own idol, comedy actor Adam Sandler.
He says, "Like MTV, it was another way of getting through to young people but that wasn't the reason I did it. My son loved Adam Sandler and I thought: 'I'm going to have to see it anyway, so why not be in it?'
"It was a great 1980s spoof and I thought it was very funny - they had me at the Boy George impersonation. I gained a number of diehard teenage fans through doing it, who are adults now and are still turning up to my gigs."