Acknowledgement: Understanding and compassion for others and their suffering is the next step. Put yourself in the shoes of people who don't have the luxury of being wasteful.
I've found great virtue in two-thirds of the way into the message; right before I'm really want to nail home a point, pausing to tell a joke or to tell a light-hearted story, because I know my audience has been working with me now for 20 or 25 minutes. And if I can get them to laugh, get oxygen into their system, it wakes up those who might be sleeping, so there's something about using a story to draw people back in right before you drive home your final point. In that case I think it's real legitimate just to use a story for story's sake.