If you've ever wanted to back up large files - or even entire hard drives - to CD, then Tri-Edre's CD Folder Partitioner 2.0 may be the answer.
This software exists to help uses copy data to a set of CDs, DVDs or disk images. A user can employ CD Folder Partitioner to back up their Home folder to a series of CDs.
The software can intelligently split large files or folder collections up for burning to multiple optical media discs. It's available now for Mac OS X 10.3 (or higher), and costs €39.