The pattern language movement started with seminal books by Christopher Alexander and his associates (most notable A Pattern Language and The Timeless Way of Building) and gained traction among software developers with the release of the now-famous "Gang of Four" book (its real title is Design Patterns).
The UI (or UED or UX or HCI or interaction design) community has also been busy turning patterns collections into books, starting with Jenifer Tidwell's classic Designing Interfaces and Dan Saffer's recent forward-looking Designing Gestural Interfaces.
In that same series from O'Reilly are two other books directly inspired by this collection of patterns. Already on the market is Designing Web Interfaces by Bill Scott and Theresa Neil. Bill Scott was the second curator of this pattern library and their book draws heavily on the Rich Interaction patterns collected here.
September of 2009 will see the release of Designing Social Interfaces by Christian Crumlish and Erin Malone. Christian is the incumbent curator of this library and Erin founded it. The patterns in Designing Social Interfaces were developed collaboratively and shared in nascent form on a wiki and many of the patterns collected in the book can already be found in our Social patterns category.