Michael Anonuevo let me know that he recently posted an in-depth article about creating complex shapes with the Revit Family Editor. Michael runs the site Little Details Count and is a contributor at Club Revit, a site started by Lonnie Cumpton. He discusses how he created the following family as well as useful interface and rendering subtleties between Revit 2010 and 2011.
Michael also has an interesting post about the little teapot that Revit uses as its icon for Rendering button. It is a common question that I get during training. He did some digging to provide more background. Scroll to the March 8, 2010 post titled, "Autodesk Revit Teapot Render Button".