Sorry but this is the closest forum I could find for Keynote 2009.
I have a song presentation with verses and chorus on separate slides. They will require a lot of jumping to non-sequential slides.
However, when presenting, the thumbnails at the top of the screen slide out of view when a slide is navigated to. The operated needs the view to be permanently in view in order to see which slide to jump to. This is in a church environment where the singer won't necessarily sing a song in natural sequential order.