Over at Biblical Preaching.net Peter Mead has some good things to say about using PowerPoint on Purpose.
For some people, whether or not to use powerpoint is not even a question. It is assumed. I don’t assume I should use it. My default is no powerpoint, then if I use it, I use it on purpose. . . I don’t think it is worth using in order to show your outline (that’s for you, not them), or to show your preaching text (they need the practice reading their own Bibles). I don’t think it’s worth using if it means sacrificing preparation time for formatting time. I certainly don’t think it’s worth using just because you have a projector and a laptop. I don’t think we should use it just because it is used in the business world (please note many in the business world are lousy speakers, and many of the good ones left compulsive powerpoint use behind years ago!) I’d rather have listeners engaged with me and with the Bible in their laps than with a screen.
Haddon Robinson has said that, “A picture is not worth a thousand words (the people who make pictures came out with that!) Some words will never be captured in a picture.”
Yes! I agree. I tend to prefer using PowerPoint more often than not, but all of Peter's points are good and well thought out. Don't just throw something together just because it's expected. Let the content and Scripture drive the visuals, not the other way around. You will dramatically improve the quality of your PowerPoint if you use less quantity and more quality.