Comparing U.S. DNS unblocking services
These are all the DNS services I know of. If you know of others, please add a post to the thread and I’ll add the basic information to this initial post. I have personally tested as many of these services as I can, but obviously not with every site and every device. I will add any useful information that users or operators of these services can provide.
This list is only for DNS services offering U.S. geo-unblocking, not VPNs, not DNS services that are only available bundled with a more expensive VPN service, not browser extensions.
Update Jan 2016: As has been widely reported, Netflix is now blocking the use of proxy services (VPN and DNS) more aggressively. Sadly this blocking is pretty much 100% effective and most people have stopped using VPN and DNS services. Netflix probably doesn't even need to bother maintaining their blocking.