He made the Linux kernel. Its an operating system thing. Anyway, when we talked I remembered something about him. He happen to have VERY strong opinions about stuff and he is not afraid to speak his mind. A quote:
"I'm a *******. I have absolutely no clue why people can ever think otherwise. Yet they do. People think I'm a nice guy, and the fact is that I'm a scheming, conniving ******* who doesn't care for any hurt feelings or lost hours of work, if it just results in what I consider to be a better system. And I'm not just saying that. I'm really not a very nice person. I can say "I don't care" with a straight face, and really mean it."
And
"A lot of people still like Solaris, but I'm in active competition with them, and so I hope they die."
But you might have to be a bit geeky to understand some of the stuff he says xD.