The Bible

[lats]

Who wrote the Old Testament?

[brachiopod]

Supposedly God. Though there is strong evidence to suggest that he contacted his agent and got a ghostwriter in to do it.

[Clanad]

For a little more reasoned approach, check here...http://www.straightdope.com/mailbag/mbible2.html

[Yeah Bee]

Joshua, Rut, Samuel, Esra, Nehemja, Ester, Job, Jesaja, Hesekiel, Daniel, Hosea, Joel, Amos, Obadja, Jona, Mika, Nahum, Habackuk, Sefanja, Haggaj, Sakarja, Malaki, Tobit, JuditBaruk, Mackabeer, Tolkien

Was that everyone puuh

[EssJay1]

Difficult to say. Obviously the stories were passed down orally in the first instance. Then they had to wait for someone to learn to write.

[banjo]

A variety of people throughout various periods of time. 

[galltin]

One thing I love about this site is the links that you get to know about. That straight dope site is good Clanad. Many thanks.