One of the cool new features in Revit Architecture 2010 is the new curtain wall pattern based family. If anybody has seen Zach Kron's Buildz blog you will have seen some of the cool stuff he does with this new family. Now a few years ago I remember playing with curtain wall panels (old school Revit) and trying to create a spikey hedgehog type form. The trouble back then was it was not possible to build a cw panel the would fit into a double curved surface.
Fast forward to Revit 2010 and its finally possible!
Take a look at this video on how I created the panel above. I hope you find this useful.