I've been reading the book Masters of Doom about the careers of John Carmack and John Romero. I have ported their games Doom and Quake to many different platforms. It was interesting to read about their lives and game business.
The book brought back memories of development in the '80's, and '90s. Things were simpler (and worse) then.
Some other John & John links:
The Rise and Fall of Ion Storm
Carmack QuakeCon Keynotes