I wouldn't suggest you try and eat this screensaver, but it certainly does look mighty tasty.
Nature Screensaver features a bunch of juicy cherries next to a rippling, animated pool of water. In front of the fruit is a series of small stars that are constantly twinkling. To be honest, I'm not sure exactly how 'natural' this nature screensaver is. Personally, I've never, ever seen this scene in real life.
Anyway, Nature Screensaver looks quite pretty and will make for a nice accompaniment to your phone if you're a fruit fan.