I've just posted the following to this article about the tendency in the UK to see being bad at Maths (and Science) as a mark of pride.
It really annoys me every time a presenter on the news 'jokes' that they can't do maths or science. Melvyn Bragg on the usually excellent "in our time" is another. If you can't do it, then research your topic - or at least stay quiet!
I grew up with Johnny Ball. I really miss him on TV - he was enthusiastic and willing to find out about things which he didn't know about. Today's "science" shows are more about blowing things up in the microwave, or the caravan (yes, Braniac, that means you).
An honourable exception is discovery's mythbusters (UK site) - they don't always get the scientific terms right (misusing terms like force, pressure etc, the narrator in the UK is especially guilty of this) - but they have the sense of the scientific method, and of exploration.
I really like the idea. Each week, wannabe Johnny's would present a piece about some aspect of science. It'd need to be fun, accessible, as well as being good science. The panel would consist of, a non-scientist, a scientist (not Adam Hart-Davies!) and the 'Lloyd-Webber figure' - Johnny Ball himself.
Each week, Graham Norton would tell the contenders 'You could be Johnny'.
The theme tune would end with Jack Nicholson bursting through a door saying "Here's Johnny!"
The public would vote (usually on style over substance) and there'd be a 'present-off' between the two who had the lowest public vote, they'd explain some particularly gnarly bit of science or maths. Johnny would save one of them.
I could be a getting a little flippant here, but I'm deadly serious about the issue at hand. Personally, I think some sort of contest might be a lot of fun, as well as helping to increase interest in science and maths. It could work, couldn't it?