If you're actually a fanatic, you'll get this badge without even noticing. If you take a day off, you're not really a fanatic.

Probably too late to weigh in now but the ideal would be for the 4 options to dynamically change based on the tags on the question. If it's tagged [ubuntu], make AskUbuntu an option. If it's tagged [mysql], make DBA.SE an option, if it's tagged [security], make Security.SE an option.

Indeed, a common case on ServerFault would be to see a question tagged with [apache2] and [php] with code blocks containing log files as well as those two languages. Worse, the log files can even contain snippets of PHP. Heuristically identifying the language might be plausible but I think manually specifying or getting no highlighting would be the only safe option. The markup syntax problem should be solved by adding a dropdown in the buttons above the text area.