You want your audience to remember you and your message, not your slides. Gorgeous visuals can therefore be your biggest enemy in a presentation.
When I find my audience distracted by my visuals instead of listening to me, I walk over and hit the ‘B’ key. Check out what happens.
It has the dramatic effect of shifting all attention in the room to you. It gives you a chance to demonstrate how well you know your message. And it tells people that you personally want to share the idea with them, because it matters that much to you.