I haven't seen this posted anywhere (yes I looked). I new to Keynote, but I'm learning fast. Man, this blows away Powerpoint. The other day I tried uploading a keynote presentation to my iDisk and I wasn't able to select it (faded out). I learned that you have to compress the file and iDisk will recognize the zip file. However, today I downloaded the trial version of Keynote '09 and I made a test presentation. To my surprise iDisk recognized this presentation, and I was able to upload it. BTW, the magic move transition is pretty damn cool. Another great thing is if you export your Keynote presentation as a Quicktime file, the magic move transition works! (unlike exporting as ppt or pdf) Of course I haven't tried to open it on a PC yet since I don't allow those pieces of crap in my house, but I'll test it at work tomorrow.