The difficulty with illustrations is that they can be too good. We see a video clip, or hear a song and immediately see its potential for use as an illustration in a talk. Then the illustration begins to burn a hole in our notebook; it has just got to be let out. We end up falling into the tempting trap of writing the talk around the illustration. I fell into just such a trap with the film The Matrix. It is a rich source for illustrative material. There are some fantastic bits of dialogue seemingly purpose written for talks about the Christian faith. So I used and overused certain clips until, fortunately for all those who listen to me, I lost the cassette.