I suspect they are referring to the ever-changing desktop background feature in OS 10.2. It allows you to have a new background appear either every time you start up, or once an hour or even every 5 seconds.
If your video card is Quartz Extreme capable, there is a lovely fade to next image aspect to it.
<BLOCKQUOTE>quote:</font><HR>Originally posted by Chealion: Wow! This is sooo cool! If you got some spare CPU cycles, its actually quite nice... actually makes your computer seem more interactive and even a little alive.<HR></BLOCKQUOTE>
Yeah, I've been running the Forest screen saver as my desktop for quite a while now. It's really nice and I haven't noticed a slowdown of my machine much at all.
It's all eye candy and knowing you have the ability to do more then just pictures. Its more of a mental thing, knowing you have the power to move from the stationary to moving. Personally, I have xBack running all the time now, so when I see my desktop, it seems alive so that the computer gives an impression that its working and willing to serve (if you will, although that sounds really harsh).