First, a few quibbles.
* The index is worthless. I'm not sure why the author (or the book editor?) dropped the ball on the index, but it's almost non-existent. If this book were more of a typical reference book, you'd lose some points for that, but since it's more of a handbook, it's not so bad.
* No mention of the Macintosh versions (it's not going away -- deal with it :-). I've had more than my share of issues where I prepared my Powerpoint on a Macintosh and then (for whatever reason) had to present on some Windows machine that was tied to the conference room projector. Or, I had to share presentations with teammates who used Windows (and vice versa). Fonts, graphics, video files, animation -- there are plenty of potential cross-platform issues that could really benefit from the author's expertise.
* Size. Yes, size does matter when you are sending presentations to team members via email. PPT files can get really big really fast. I was surprised that there wasn't a short section that addressed ways to minimize the file size of presentations.
I've looked at a lot of computer books over the years, and this book is far better than most. The key thing the author does (that most computer books don't) is really address the user needs as opposed to just outlining the information and regurgitating it. Nicely done.