I still think that the fs stuff deserves it's own moduel (because there's probably 10 common fs functions that aren't in core), but take a look and see what you think:
https://github.com/coolaj86/node-examples-js/tree/master/fs.extra
https://github.com/jprichardson/node-fs-extra
I really like the idea of keeping it clean by having one function per file.