There is a site called RateMyNetworkDiagram, which allows users to upload their own network diagrams to be rated and critiqued by fellow networking professionals.
By their permission, I chose these 12 examples of some of the higher-rated diagrams in categories of Large, Small, Home, Network Racks (photos), and Funny. Maybe these will inspire you to get creative with your own network diagram creation.
Selena Frye is a former Senior Editor for TechRepublic. Her background is in technical writing, editing, and research. I edit the Data Center, Linux and Open Source, Apple in the Enterprise, and IT Security blogs.