PC-BSD is the most exciting, a modern KDE-based distribution with a BSD kernel. It boots into a smart graphical installer (if you’ve ever tried any BSD you’ll know this is a very distinctive feature).
PC-BSD apparently got all the way through the installation, but fails at first boot. Since
for some reason which I have to separately investigate libguestfs cannot mount the UFS filesystems from BSD automatically, I cannot currently get any further on this:
DragonFly BSD and NetBSD fared worse, not even booting in the KVM hypervisor. These are probably down to bugs in our emulation and warrant further investigation: