The new “Mavericks” version of Keynote comes with substancial changes. Since many of us on the presentation track use keynote heavily I was expecting hatred to the new build, but in fact it is working out quite well, although there are a few quirks.
If you try to add an animated gif to a presentation in Keynote 06 it will not work. If you want it to work, rename the file to animated.gif.MOV (add the .mov extension) and add it in. Keynote will now think its a movie file and treat it as such.