Jonny also points to some of Mike Riddell's writing on the topic, and here's a tiny sample from his book God's Home Page [p 122-3]:
The dominance of expositional and deductive preaching in the contemporary church calls for some alternatives, lest the faithful continue to suffer unnecessarily.Is that a critique you'd recognise? Riddell declares that preaching the Gospel is too valuable not to be done well. As Jonny Baker reminds me in his hand grenade/fruitbowl chapter, Riddell says ‘The purpose of the sermon is to unleash the power of scripture in a way that leads to personal and corporate encounter with God.’ [p119 God’s Home Page]. And somehwere else he helpfully suggests that when you've got 'sermonizing', that's when you've got the wrong kind of preaching - the kind none of us wants whether churchgoers or not. The cultural mix is what can inhibit or enable the unleashing of the power.
We had a good sermon in our church this morning; the gifts our vicar Tony brings include a great skill in storytelling, and a reflective approach to applying Scripture in life.