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National treasure Johnny Ball joins Brian on the sofa to take a look back at the classic television that made him the person he is today.

He's the man who millions of us grew up with during his 16-year residency on Playschool.

We find out how he got his name from a football game, about the TV he watched every week with his colleagues when he was in the RAF, and about the stars who inspired him to go down the road of becoming a stand-up comedian.

Along the way we take a look at the big Saturday night entertainment show that was required viewing in the Ball household, the comedian who made his dad roar with laughter, and the vintage TV ad that kept his teeth whiter than white. Throw some serious science into the mix and you really do start to see how TV made the irrepressible Johnny Ball the man he is today.