Kevin DeYoung has a good post with a particular application for preachers. He encourages us to make the best things we say in the pulpit be our exegesis, not our humor or antics.
The best part of the blog reads:
The congregation should be most aflame with gospel zeal when they are beholding new things in the chapters and verses at the end of their noses. God uses all of the preacher–personality, humor, gestures–all of us. But the indelible impression left on our people must be a sense of the presence of God arising from careful attention to the word of God. If the best stuff we have every Sunday is disconnected from our hard won exegetical work, our people will learn to trust us and not the Book. They will look forward to our new antics, not our new discoveries in the text.
Here’s the entire post. Worth your time.