NTFS -- at least, the version in Win7 -- lets you mount a hard drive as a subdirectory on another hard drive!
Boy, this is going to make it a LOT easier to move my TV shows over to my new hard drive.
So thanks, Microsoft, for...having a feature that Unix-likes have had for literally decades.
Now do you think you could maybe do something about your fucking shortcuts?
...holy crap, Vista/7 DOES have symlinks. It's mklink.
Of course, you have to specifically grant your account access to make them. So either that's just one of those stupid, overly-fiddly Vista/7 permission things, or somehow there IS a potential security problem somewhere in the NTFS symlink implemenation.
And it's also fiddlier than the *nix version; it requires you to specify whether you're linking to a file or a directory, and doesn't assume that you want to use the same name for the link as the original file (meaning that most times, you have to type the same damn name twice).
Still, definite progress!