Yesterday I attended a seminar sponsored by Applied Tech (a Wisconsin-based IT solutions provider), Sprint and Microsoft that discussed Office 2007, Windows Vista, Microsoft SharePoint and Sprint's mobile solutions. The seminar provided some interesting insights on each of these. I was happy to be able to play around with Vista and with PPT 2007 in the adjoining breakout room. I haven't converted to either of these yet, given that clients are still typically using prior versions of the software and operating system.
I did find that PPT 2007 offered some interesting shortcuts and tools (like SmartArt) that should make it useful for the business presenter. In line with my own experience with PPT 2007, I was interested to see a recent article in PC Magazine "Introducting PowerPoint 2007" that I think you'll find interesting. Among the topics the article reviews are tools for framing images, SmartArt for charts, re-coloring slides.
If you've become a lover of PPT 2007 why don't you share what your favorite new features are.