They've posted part 3 of the Media Center University series at the CE Installer Blog. If you're at all into home entertainment systems, you need to check this out.
In the final segment of Optimizing Media Center for Entertainment & Networking, Mike Seamons walks through Extender set up, network tuning, Windows Home Server and some different deployment topologies. WMC can be installed as a HTPC, centrally in the rack or as a headless Extender server and Mike speaks the benefits and considerations of each configuration including advanced topics like integration into a whole home audio system.