It said to be an equivalent to a Nobel prize. And this year it was Linus and the Japanese Dr. Yamanaka. Linus for obviously making the world a better place with software and Dr. Yamanaka for research on stem cells that don't need embryo stem cells. Read for yourself here:
http://www.technologyacademy.fi/blog.../19/laureates/

I wonder if these 73'000 man years mean the kernel itself or something more.