Nice article. I would add not just creative thinking, but the ability to present in a social situation, and to think (and talk) from your heels. Gaming is a great and creative social outlet. But expressing myself clearly, keeping the audience (of players) engaged, trying to anticipate the moves of the GM (as a player) or the players (as a GM) have been right up there with the rest of the benefits.
My job requires a lot of creative thinking, presentations, writing, ordering and making sense of large amounts of disparate information, and speaking off-the-cuff on various topics. It's a job tailor-made for someone who runs and plays RPGs. Gaming in general, and GMing in particular, has made me better at my job. Our group consists of an analyst, a technology editor/journalist, a lawyer, a software guy ... among others ... everyone brings skills to the table, and gets something valuable out of the experience.