So...any questions?
In his excellent blog, Seth Godin (author of the ebook "Really Bad PowerPoint") offers what I hope is facetious advice for business presentations. If you're bad at presenting, Mr. Godin suggests that you
start with the Q&A. Any questions?
Warning: don't do it. This approach is likely to generate audience confusion, rambling discourse, and chaos. It screams "I hardly prepared. And I can't present effectively."
Here's a better idea: if you're a bad presenter and you MUST give a presentation... learn how to be a good presenter. Join Toastmasters. Invest in continuing education.
Communication is a critical part of life: make a point of learning to present your ideas (and yourself) well.