Seticraft is a dedicated whitelisted MCPC+ Feed the Beast Minecraft server that runs the 1.6.4 Direwolf20 pack. The pack is always kept up to date with the latest recommended version.
You can find out more about the server at http://seti.servegame.org/minecraft/. We're looking for active players of all types, as we are looking to start several community projects.
There is an Official IRC channel over on irc.esper.net. Join #seticraft and come hang out with us! We also have a Teamspeak 3 server.
If you'd like to be whitelisted head over to the Seticraft website and put a post on the forums.