recommendations for wiki like software or something beyond wikis

[Walter Tautz]

Hi folks, I was wondering if you folks could recommend some kind of web 
based
content managed system that allows easy entry of various kinds of data.
Mostly text based but with the possibility of inserting graphics. It 
would be nice
if this system would allow for style sheets, and the ability to print 
hard copies.
I suspect a wiki may be sufficient. Favourites?

walter