Single User Boot the Mac
I've had a few kernel panics in the last couple of days, so when I got back from work today I pinged Apple (I have Apple Care, so that makes the whole thing easier). It turns out that booting into single user mode and running fsck is pretty simple - you reboot, and hold down command-s on reboot. That drops you to a root prompt, where you can do anything you know how to do in Unix. Pretty cool :)
