Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Almost as though they heard my suggestions, Gentoo now has an installer. It's not included on an official Live DVD just yet, but it just might next release.
Wiktor W Brodlo has ported the Red Hat Anaconda installer from Sabayon to work with Gentoo. You can either install it in the live Gentoo environment or you can roll it up in a new Gentoo ISO.