I'm not sure about just reading a six page memo out loud to everyone. That seems like a great thing to email to everyone. Some of my least favorite memories from college are the couple of classes I went to where the professor basically read the book to us. The difference is, I'm guessing, that attendance isn't optional at an Amazon meeting.

Personally I like keeping presentations on the short side - only using slide shows for ancillary data like citations (which I find awkward to fold into the flow of a speach) and graphical data. Unless something is really interesting or very important, it's only going to get 5-10 minutes of people's attention.