What are your favorite CMS's?
I'm looking for one that would basically be a website with numerous pages on it, with a variety of usergroups that are able to edit certain pages. Sort of like a wiki, but where only certain usergroups are able to edit certain pages. It would also need a calendar, editable by all the users. Any tips? I feel ike there are enough mods for php-nuke that I could probably run that, but I want to make sure there isn't a more secure solution first.