I've had Shon Harris' All-in-One CISSP book on my shelf for years. I've taken it on long drives and flights without so much as cracking the pages of that great volume. It finally took a week long class and the discipline to study before I was ready to commit. I took the six hour plunge in December and recently found out that I'm officially a "Certified Information System Security Professional". Yay!
The real significance is embodied by standards organazations and my new professional community. It's all about the articles, networking, and even the new forum that I already spend too much time on. My goal is to continue to push good security practice in the Industrial (SCADA, HMI, controls) space.