If you're interested in customizing, extending or integrating with Revit using the Revit API, then you might like to attend the Autodesk AEC DevCamp in Wakefield, MA on September 5 - 7, 2007. This is a great chance to learn about the product and API, talk to Autodesk product management and engineering staff, and to meet your fellow Revit API users.
Visit www.autodesk.com/AEC-DevCamp for more details.
Cheers,
Stephen Preston
Autodesk Developer Network