How the iPhone was made...stressfully.

From a recent article in Wired Magazine:

For those working on the iPhone, the next three months would be the
most stressful of their careers. Screaming matches broke out routinely
in the hallways. Engineers, frazzled from all-night coding sessions,
quit, only to rejoin days later after catching up on their sleep. A
product manager slammed the door to her office so hard that the handle
bent and locked her in; it took colleagues more than an hour and some
well-placed whacks with an aluminum bat to free her.