I'm setting up a Mac Mini in my office primarily as a informational display. I would like it to automatically cycle through several active apps (iCal, preview or iPhoto, Safari, etc.). Basically, I'm looking to make something like a screen saver from these full screen views. It would be best if I could control the amount of time spent on each app (e.g. 30 seconds on iCal, 2 minutes on Preview slide show, etc.).
Does any one know of an app, OSX settings, or basic script that can accomplish this?