The reason a presentation exisits, is so you, yes you, can engage with your audience, present your material and use the slides to back up your ideas with brief points.
In Jane's article she referenced the findings from Pickit and Eyeful Presentations, who together listed the top 10 images to avoid in presentations. Not only did this have me laughing out loud, it brought back all those memories of terrible, terrible powerpoint presentations I've had to sit through.
Pickit and Eyeful: Top 10 Images to avoid in a presentation:
2, Images of people holding hands around the globe
3. Stacked Pebbles
4. Thumbs Up
5. Archery targets (with optional arrow)
6. Jigsaw piece being fitted into puzzle
7. Businessperson poised to run a race
10. Groups of businesspeople staring intently at a monitor