Well they have managed to pervert it quite completely from it's original HIGHLY USABLE 2000 version(which was little more than a repacking purchase they had recently made). But with enough swearing and screaming one can generating some fairly shocking stuff with it.

www.ratemynetworkdiagram.com/

Is just full of stuff people have banged out with it.

Check these out aswell:
http://www.cenic.net/operations/documentation/CENIC-Design.jpg
http://www.cisco.com/iam/unified/ipt1/images/04implem-13.jpg
http://www.bvisual.net/images/WorldCom%20-%20Auto%20network.gif