With ZFS now being included in FreeBSD I decided to give it a shot. With it's ability to dynamically allocate space to partitions, keep checksums of sectors, built in compression and encryption and ease of administration it really does seem to have a lot of problems solved. I used FreeBSD 7.1 AMD64 for my install. Just follow the steps below to get a FreeBSD box running on ZFS.
First of all acquire and burn the FreeBSD media.
Boot the machine off the CD.
Once you've selected your country and location, select Custom install from the systinall menu.