less static website

[eluser]elmystica[/eluser]
I've developed a few sites using CI and I'm loving it.
However, I've got a question.

Most of the time, a website main-navigation would be like

"home - product - service - about -contact"

I used to make a controller class called Home, and with functions for the other pages.
I also could make a single controller class for each page

Now I'm wondering, how do you guys handle that if you allow your client to add extra pages to that main menu? For instance, what if he would like to add a page called "testimonials"? How do you handle that? You shouldn't need to add an extra class or function, should you?