Link: http://www.sabayonlinux.org

For those that dont know; sabayon is a binary gentoo distro.
So here it is gentoo at is best as sabayon.

Possibly the best live cd out there.

Sabayon Linux or SabayonLinux, (formerly known as RR4 Linux/RR64 Linux), is a Gentoo-based Linux distribution created by Fabio Erculiani.

A couple years ago i tried it as RR64 and chated a bit with Fabio Erculiani.
My outstanding congrats for his work since RR4/RR64

http://en.wikipedia.org/wiki/Sabayonlinux

note:
Sabayon Linux differs from Gentoo in that instead of installing the entire system from source code, the initial install is made using packages which are pre-compiled and bundled with the source code. Sabayon Linux currently supports the x86 and x86-64 platforms.