He is a very innovative musician. Look at Ladytron Roxy music for example, then albums like taking tiger mountain, another green world. He collaborated with MANY other artists and helped their careers. Big names. Have you heard of Bono, Pavarotti, Talking Heads, Public Image Ltd....
He was interested in many things, outside of music. Ways of thinking. Oblique strategies.
He designed the microsoft Windows sound.
Hes a Futurologist. Looks forward to what might be important to our society in a decade or so.
i.e, hes a consultant to big multinationals.
Also, he briefly played a priest in Father Ted.
To be honest, I'm more a fan of his pre-ambient stuff. I suspect he spends more time producing rather than playing. He's definitely an intellectual and fairly modest with it. You just never know what he'll turn his hand to next.