The Dutch government is the first in the world to both issue a Root CA (Certification Authority) and present it for inclusion in a major browser. (Firefox, duh!)
Users of Firefox 1.0.2 can use
View -> Preferences -> Advanced -> Certificates -> Manage certificates -> Authorities
and scroll down to Staat der Nederlanden to verify this. Sweet.
It’s safe to assume that this is part of the PKI Overheid initiative.