I have been on the lookout for a home DNS service, without much success.  I'm not looking for a service to point a domain name at my home computer from the public side of the internet.  I'm looking for a service that will point a machine name to an internal IP address without rolling my own DNS server.  I figured that someone might have something like this as a paid service.  Definitely something I can see a service like OpenDNS offering.  Basically, when a computer on my network does a lookup for machine XYZ it should check the list of internal addresses and if not found, fall through to public DNS entries.  Then on the service website, you could configure your internal ones in a password protected area.

Anyway, after having no luck finding such a service, I decided to just use a domain I already had.  So (assuming I own the domain xyz.com) I just went to the DNS management of my domain and pointed machinename.xyz.com to my internal IP address of the machine.  Now I can access the machine by name on my network.  It's not the most ideal method since you have to own a domain name, but it was the simplest solution I could find.