I just set up Twiki for our company intranet:
Using a VMware VM using a Twiki install on Debian Stable:
http://twiki.org/cgi-bin/view/Codev.TWikiVMDebianStable
This was the first time I set up a VM, and it was very cool to see a Linux boot up screen within a VM on VMware server for Windows. It also saved me a lot of time vs. a normal Twiki install.
This article I read over the weekend made me think of all the Internet and Web 2.0 apps that I take for granted. The blog we set up lets us put up news very easily. IM is a great supplement/alternative to email/phones/direct speech, and now this Twiki will be a nice repository for corporate information that presently is all over the place.