I just installed OpenSolaris 2008.05 from the OpenSolaris.com site. It's pretty sweet. They've had the installer nailed for quite a while, the big thing in this release (for me, anyway) is that it installs ZFS on the root device, and sets the system up to boot from ZFS. No more disk partioning! One big happy pool-o-pages! No more UFS!

(but I'm *still* waiting for power management)