How much music theory do you need to know?

So it's a hotly debated topic. What's the minimum amount of music theory a musician should know to be able to get by?
Is it important? Is it not? What's everyone's thoughts?
As per usual, i've written a few words about it. But in my experience it's a subject that gets lots of people rather animated!
http://www.lastminutemusicians.com/how_ ... gs/?p=1742
Let the discussion begin!
Is it important? Is it not? What's everyone's thoughts?
As per usual, i've written a few words about it. But in my experience it's a subject that gets lots of people rather animated!
http://www.lastminutemusicians.com/how_ ... gs/?p=1742
Let the discussion begin!