Well, lately I have been pondering broadening my web enterprise, and with that I need to be able to separate my registrar from my web hosts. I figured the best way to do this is by using Godaddy.com as a registrar.
I did an experiment, and transferred one of my domains from Dreamhost to godaddy. I left the hosting where it is. I had some trouble, and ended up calling technical support and they were very helpful and made it very easy for me.