I don't think anything for PostNuke can do it, but Content Express or PagEd seem to be the closest for me to use for the moment.
Which is easier to use? :?:
Do either of them allow you to hook into dynamic content as well as display static pages?
Which is more versatile to make fancy pages?
One of the Content Express sites is quite impressive in its use of animations: http://physicshome.c…e%20Lectures&meid=1
but perhaps PagEd is just as capable but just doesn't have as good a demo site? :D
