There used to be a science show on German television that always demonstrated interesting engineering science bits at prime TV hours (knoffhoff show). They demo

There used to be a science show on German television that always demonstrated interesting engineering science bits at prime TV hours (knoffhoff show). They demonstrated windscreen security glass by someone jumping on a large (2mx2m or more) sheet between two wooden blocks. It looked like someone jumping on a springboard. At the end another person tapped the side of the glass using a small hammer and the glass shattered into tiny little pieces. The jumping guy was still on it, but did not get cut because all pieces where dull shards. It really impressed my young self at the time.