You back things up for a reboot? I do backups once a month or so. (Manual. I don't need no fancy time machine.) The only time I will actually back things up before a reboot is a point upgrade. I.e., 10.5.5 -> 10.5.6.
No, Im doing an initial offsite backup where I am sending all of my data, pictures/movies to a server. Im not running time machine right now. But eventually will. I have a TC, which is full with backups. So I will send that to the server, along with everything else. After the initial backup, I will start time machine all over, and delete the backups off of TC, fill it up again, then backup that info onto the server, and keep going.
Its a good thing the offsite server is unlimited storage