I was looking today at my metric library, and spotted the sample files folder.
In it were some really cool details/models/designs. I urge you to have a look at them, before embarking on creating a fence, railing, repeating detail, roof form, roof type, or stairs. I was particularly impressed with the repeating details one.
C:\Documents and Settings\All Users\Application Data\Autodesk\Revit Building 9.1\Metric Library\Sample Files
Your thoughts?