Speaking of our church's web site...
I decided to create a variety of themes, all based on the essential core of the design, by making variations in graphics and color tables. This allows me to have our site "remake" itself according to seasonal and holiday themes. For example, the last time you saw it, it was showing a Christmas theme. If you check it again now, between Christmas and the first couple of weeks of January 2008, you will see it showing a New Year theme. If you check it after that, you will see it showing a winter theme, and so forth.