When considering the Marmite yeast extract product, in the UK x is somewhat above 50. In the US, x is well below 50. Similar values of x probably apply to Vegemite between Australia and the US.
I still didn't get it, until I read this: This distinctive taste is reflected in the British company's marketing slogan: "Love it or hate it." (from Marmite wikipedia page)
Long, long before he put up his infamous Rails rant, I spoke with him several times about Mongrel implementation, build issues and getting stuff running on different linux systems.
He seems to me to be a nice guy, a clean coder and yes, a guy who gets things done. Very much in contrast with the generally abrasive character he's built on his website.
Anyway, for what it's worth, I'd have no trouble hiring him.