Thats an amazing video.
I think a light bit of turbulence can be fun, Im fortunate enough to never have expierenced anything bad.
Three hours of severe turbulence on a Philadelphia-Gatwick flight whilst we riding the jetstream. We left PHL about an hour late and still got into Gatwick early but it was rough, extremely rough and very frightening.
And what made it worse for me and my brother was that we were sitting in the third back row in a 767 so we felt the turning motion round the axis of the wings. The crew strapped themselves into the nearest seats to where they were standing and shackled the trolleys as best they could.