The Joel Test - simple measure of quality of software team

While I was searching for something else, the title caught my attention: Joel Test Score 10 of 12, and I was intrigued - what is that test about?
Opened the link and found this gem: The Joel Test: 12 Steps to Better Code
Agreed with every point. 
By the way, the author is Joel Spolsky, CEO of StackOverflow.
Good stuff, I recommend reading.