The Librarian In Black directed me to Nielsen's top ten intranets for 2006. Nielsen lists the companies and the reasons why their intranets are the best.

Medical librarians notice, there is no hospital or healthcare facility listed. :(

Some of the trends for this year's top intrantets were the use of multimedia, e-learning, internal blogs, and mobile access. Most of the winners did not rely on one content management system to create their entire intranet. "Across the ten winning companies, the teams used a total of 54 different products. Clearly, we're far from a consolidated market in which one or two dominant providers offer everything you need. Instead, intranet teams must stitch together their own solutions with multiple parts from multiple vendors. In fact, 40% of the winners had to custom build their own content management systems (CMS)."

Sigh... if only I could have a search box on my library's intranet pages and some customization abilities. Currently I have a better chance winning the lottery than having an internal library blog or multimedia e-learning on my library's intranet

The full report (287-page Intranet Design Annual with 193 screenshots) available for download.