If you ever find yourself needing to maintain a set of patches to apply to two or more similar codebases (e.g. various linux kernels of various distros), I found stacked git to be very helpful for that purpose. http://www.procode.org/stgit/ (or maybe just apt-get install stgit).
Yes, I can definitely recommend stgit if what you're doing is basically "maintain this stack of patches". It's much more user-friendly as an UI for doing that than raw git rebase, though of course you can achieve the same workflow with the basic git plumbing.
