As a somewhat unbiased follower, it seems to me that Americans are somewhat crazy about additional certificates.
To a certain degree I agree with Steve in that you have proven you spent some time to learn something. But what and how?
A passed test or certification only shows IMHO that you have shown that you've learn the stuff the way the originator of that test what it to be. No matter if it is right or wrong; no matter if it is applicable to the real world or not.
You are labeled something, nothing more.
Sad but true that additional certifications become more and more a must-have.
I have not the thread ID at hand, but in the past we had a superb thread 'Do you think education matters?'.
I strongly believe in continuous education, but certification???