This is a shareware program (which i usually don't post about), but it looks pretty fun if you have some suitable pictures..
"Transform your real-world photo into an animated nature scene by adding a wide array of water, weather and sound effects to your own photos and images
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The best thing is that you can share your excitement with others. You can create a screensaver and present it as a gift to your beloved or friend, publish it on your website and let your guests or customers download it for free.
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Nature Illusion Studio provides you with a point-and-click design environment. In just a few clicks you can add various water effects, weather effects like snow and rain, and background sounds that recreate natural phenomena with much realism and accuracy."
from www.betanews.com 
