A client asked me last night if it was possible to block certain countries from accessing his website. He's concerned about the "axis of evil" and their comrades downloading his software. The task is easily accomplished, although it's like using a sledge hammer to tap in a finishing nail. He didn't seem too concerned that we could accidentally block Uzbekistan in the process. Unfortunately his entire site uses plain .html files, no dynamic scripting. This led me to using a slightly creative solution with .htaccess.
Broken up into five simple steps, he makes a light function to drop into an output buffering function to tell it to either show the normal content or return a 401 Unauthorized header to the visitor.