The Bio book of Steve Jobs has some chapters about it. There are also some citations about some members of the team and good part of them said it was a fantastic experience, but they had also to change job after it because they felt really exhausted (in some parts they talk about 100h per week as a standard in some teams, so I can understand them).
For casual chats, the Debug Podcast: http://www.imore.com/debug
http://www.imore.com/debug-39-nitin-ganatra-episode-i-system... with the former Director of Engineering, iOS Applications at Apple Inc, Nitin Ganatra
http://www.imore.com/debug-40-nitin-ganatra-episode-ii-os-x-... Debug 40: Nitin Ganatra episode II: OS X to iOS
http://www.imore.com/debug-41-nitin-ganatra-episode-iii-ipho... Debug 41: Nitin Ganatra episode III: iPhone to iPad
http://www.imore.com/debug-47-melton-ganatra-episode-i-demoi... What's it like to demo software to Steve Jobs http://www.imore.com/debug-48-melton-ganatra-episode-ii-unde... Part II
Why am I posting this into a talk about Japan? Oh well.