I found this quite intreresting. Being a IT person and currently on break from my certification studies, I find it interesting from just a few short years ago. These are not the most popular but the fastest growing. You can check out the other links in the 2005 article and compare yourself.
[CertCities.com | Feature: 10 Hottest Certifications for 2005]
[CertCities.com | Feature: 10 Hottest Certifications for 2003]