What Makes a Good Author Bio?

There's all kinds of advice out there, but here's what I want to know---what do YOU want to know about the authors that you read or are thinking about reading?

Is it important to you where they grew up and where they currently live? Do you want to know about their family?  Their pets? What about their education? Do you like to know a little, a lot, or only those details pertinent to their writings?

What about their actual writing?  Do you care to know why they like to write and what they like t...