Theses on preaching

What's going on when someone preaches?

How does God's word preached relate to God's word written?

How does the sermon relate to the other parts of a church service?

How does preaching relate to / differ from the other contexts and events in which we hear God's word?

How do the words of the preacher relate to the words of God?

Where does the Spirit fit into preaching?

OK...

When you've thought about those questions for a little, I highly recommend you read something I've been meaning to repost for a little while: Matthew Mason's 19 theses on preaching.