The day after finals were over, I reinstalled Ubuntu onto my laptop as a temporary measure until CentOS or Scientific Linux stabilize. It's fantastic.
I transferred only the following:
-my URL file for newsbeuter
-a couple of files off of my music player (have I mentioned how much I love Kahvi Collective?)
-a saved archive of the latest Dungeon Crawl source code
The rest I forced myself to obtain naturally, on the internet. No old wallpaper folders. No gigantic music libraries. No random text scraps of ideas littering my documents folder.
My productivity jumped drastically. My dependence on my files and the management of them takes up too much time. Some of the times I do need, sure. But I don't need to transfer over 30 GB every time I get a new OS install!
I didn't feel in the mood to build up to my usual Ubuntu installation, so I built down this time, and it left me in a pretty good position. And I have to admit, uninstalling 600 MB of programs and libraries feels pretty good.
I've said before that less isn't very useful unless you're doing it for the right reasons, but it's still a very powerful tool, as everything can be.