This video provides some background for a simple home entertainment setup:
But in practice, you'll probably be connecting various disparate systems together. If you can start from scratch, figure out what cables you need, and get everything running in under an hour with minimal cursing, congratulations: You are officially geek-certified.
You are also officially going to be getting tech support calls from the rest of your family for the rest of your life -- and that, my friends, is the surest sign of solid geekdom.
JR Raphael may never appear in the pages of GQ (the magazine), but he has an abnormally large GQ (geek quotient). For more geeky gab, follow him on Google+, Twitter, or Facebook.