I just finished reading Real Leaders Don't Do PowerPoint: How to Sell Yourself and Your Ideas by Christopher Witt. I was expecting to read about how evil PowerPoint is and how it has turned everybody into generic presenters. However, it really isn't an anti-PowerPoint book. It's an extremely well written book about how to give a great, engaging presentation whether you're presenting to a small room or an auditorium full of people.
The best takeaway that I think you can get from the book is that no two presenters are the same. You're doing yourself and your audience a huge disservice if you try to model your presentation after another successful presenter. You need to find out what works best for you based on your own personality traits.
There are a lot of other great tips that aren't buried in useless anecdotes like a lot of other business books.
I like to think that I'm a fairly good presenter but after reading this book, I might need to reevaluate.
If you've ever sat through a presentation where the presenter is reading the bullets on his/her PowerPoint slides, or even worse, if you are that presenter, I would strongly recommend you give this book a read.