So I just ran a full time machine backup. After I clean install Lion - which directories should I bring back over? All I really need are my documents, pictures, music, and videos. So those are pretty straight forward. I can re-install all my apps like iPhoto and all that stuff. But what about the other folders in my home directory, like the Library? Do I need any of that stuff, or will they just re-build as I install all my applications back?