Lazyweb
Two questions:

1. What's the best way to mount an HFS+ partition on Linux?
2. Has anyone any tools that support (however partially) mounting volumes captured in .dmg files? baghira.sourceforge.net says it can be done, but I haven't got these instructions to work, probably because my /sbin/mount barfs on "-t hfs"...

While I'm talking OSX
Rixstep occasionally comes up with the goods. Eg.

OK then - now here's the real no brainer: have you ever seen Apple dump a .DS_Store in one of their Cocoa applications?

Think about it.