What Alternative Domain Registrants are out There?

Zigg asks: "With the story on NSI's webmail "service" and the rant I posted therein, I got a little more information with regards to alternative registrars that have apparently been around a few months now, thanks to ICANN. I was hoping that Slashdot readers could contribute stories of their experiences with some of these guys, to see if any of them really are better than NSI or are just worth checking out because they're not NSI?"