Vertec Tool, Inc. in Colorado Springs, CO makes Dan Dagostino and Jeff Rowland’s enclosures which are both amazing pieces of CNC machine tool work. These enclosures cost serious money to build not only due to the design work / machine time, but because the materials used are also quite pricey!
http://www.vertectool.com/gallery.html
http://www.vertectool.com/gallery.html