He was a genius. I love the YouTube video of him and George Martin where he allows Martin access to the master tapes of 'God Only Knows' and they tinker with them together....you can see the joy on his face as George creates what Brian thinks is a better mix.

The film Love & Mercy with Paul Dano/John Cusack is also very much worth a watch if you haven't seen it. Gives an insight into a couple stages of his life.

Sail on, Sail on Sailor