Hi. I am Disney Teacher's husband, I earned certification in 2000. I was also a coordinator for a number of years, when our numbers were low, and people needed support. The process involves a serious look at your teaching, writing, videotape analysis and a lot of revision. Without a doubt, it helped me become a more critical thinker. During NBCT candidacy, you will be forced to take a hard look at what you do, explain why you do it, as well as how you know what to do and why. It is a great deal of work.
I also suggest that if you choose to attempt this, and I think everyone should at least look at the process, you should check our
http://www.nbpts.org. This is the official website. There are several deadlines you have to be aware of, and I know some of them are already past. You will also want to check to see if your state offers any assistance, as it cost over $2000 to pay for the certification.
Also, you want to be sure that you have a lot of support. Not just with other candidates and mentors, but from you administration and, most importantly, your family. I know I couldn't have done it without my wife, who took care of everything at home.
Good luck. I can say that it has opened several doors for me, and it has been well worth all the time and effort.