OK, Time Machine is pretty great, even though I rarely use it. But I have a question. If I were to do a reinstall of Mac OS X (a full format and reinstall rather than keeping old files) what would happen to my old Time Machine stuff? Basically, I would like to do a format sometime then be able to plug my Time Machine HD in and get back all my old music and video files. Would this be possible? Or would Time Machine not recognise my Backup drive because of the fresh install? Thanks for any help.