iGoogle has a new winter theme called Holiday Village. This mysterious theme has appeared and disappeared for almost a week and many people wondered why Google doesn't release it for everyone. Apparently, Google realized that Christmas isn't far away and the theme should be available in your iGoogle pages.
Here's the description: "watch the snowflakes fall and the lights twinkle in this cozy and quaint alpine village."
If you can't see the theme, you might try to copy this code in your address bar while visiting iGoogle and then press Enter. It seems that not all computers can access the theme's files, so this code could reset the theme to the default one. You can see more images in this slideshow.