Art, Geeks and Power Ploys
Article by David Strom is a guide through the process of gathering the people necessary to build an intranet.
http://www.strom.com/pubwork/forbes896.html
Intranet vs. Internet Design
Article by Jakob Nielsen covering key design differences between intra- and Internet's.
http://www.nngroup.com/articles/the-difference-between-intranet-and-internet-design/
The Canonical Intranet Homepage
An article by Jakob Nielsen discussing intranet uniformity.
http://www.useit.com/alertbox/20050523.html