The best thing since
sliced bread, just about.
Norton Ghost not only allows you to move all your files from one disk to another, it takes everything along for the ride : FAT32, NTFS, and Linux partitions, your MBR, everything. And it's smart enough to leave baggage like the Win32 swapfile behind. New hard drive bigger than your old one? No problem, it just extends the first partition it finds to utilise all the extra space. It also has a utility (GDisk) that allows you to resize partitions on the fly. Other mind-bogglingly useful features include the ability to write an image file of a drive (which you can then burn onto CDs), and the ability to clone disks over a network or (for the ultra-patient) a parallel port link.
Arise Sir Norton, genius of the realm.