In my seminary we often here the phrase "the dignity of the pulpit". We talk about how the pulpit needs to be a place that is seen as holy and reverent. The preaching of the Word is as Christ speaking to his bride.
My wife and I just heard a sermon by the dean of an evangelical seminary that actually ended his sermon with this- "and if you do not like it I have one word for you- www dot get over it dot com"! The crowd then burst into applause.