Free Screensavers From American Greetings
They have a variety of screensavers for selection. They have screensavers on Christmas (Christmas is coming up, so why not screensaver-ise your desktop with some interesting screensavers?) and many others like the four seasons if you are feeling seasonal. Screensavers can be in the form of animations or photo montages. If you are feeling adventurous, you can try both and see which suits you best.
Downloading one is easy. You choose one that you like and click the "download" button. If you are not registered yet, they may ask you to register with them.
Personally I like the "Kitty in the Window" screensaver because of the interesting things the cat does in it. Pretty neat for a screensaver.
Here are some images for you to see: