The big version of the human calendar is amazing!
The portable version is kind of cool too.
From Craig Griffen, who also brought you the human clock.
Designing Social Interfaces
Principles, Patterns, and Practices for Improving the User Experience
This book presents a family of social web design principles and interaction patterns that we have observed and codified, thus capturing user-experience best practices and emerging social web customs for web 2.0 practitioners. [+]

I trust Jon Lebkowsky. I think I even spelled his name right. I met him on the Well, knew him by reputation as a blogger, sxsw presence, and fringeware review alumnus. He and I cohost blog, formerly blog.ind, a featured conference on the Well.
