[olug] Which certifications are worthwhile?

[Eric Lusk]

I've been working on PCs for almost 15 years.  During that time, I've never been required to have any certifications.  However, that's just changed.
I just accepted a job that wants me to get A+ certified, and they're also paying for Dell certification.  It will be nice to have the pieces of paper that say I'm certified, but it's gotten me wondering which certs have become truly important anymore...
I'm moving toward just running my own computer repair/consulting firm at this point.  So far I've got a start with a few people who won't go to anyone but me for repairs, and a business who is very willing to refer others to me for data recovery/forensics.  (I've taken the CHFI courses, but never got certified there, even)
The next logical step is probably along the lines of Cisco certs, I know home networking but haven't had much opportunity to delve into Cisco equipment.  Not exactly something that you see in a SOHO setup.
But, anything else that's recommended, or I should at least crack a book open on?

 I ran the Harry Potter books through a spell checker; none of those spells should work.