(maybe not the fancy deployment, but the container technology)
That, together with ZFS turns freebsd into one hell of a server OS. ZFS seriously needs to come to linux. And don't say license problem, "there is nothing in either license that prevents distributing it in the form of a binary module or in the form of source code."[1]
[1] http://zfsonlinux.org/faq.html#WhatAboutTheLicensingIssue