I am a huge fan of data visualization. Here is a nice overview of some interesting textual visualization techniques. Other than tag clouds this rather new to me. Personally, I find this literary organism maps rather aesthetically interesting.
Leave it to the people at Walt Disney to be pioneers in information design. Here is a Disney org chart from 1943. It captures both teams and process. It’s a very sophisticated bit of information design, in my opinion.
Redmine http://www.redmine.org/