The Mozilla Accessibility Project has oodles of links to keyboard shortcut goodness, including a neat DHTML Mozilla Keyboard Assignment Map (Gecko only). For general reference, I still mostly use Jesse’s Navigator Keyboard Shortcuts reference. One thing that I noticed is that this old event test page doesn’t seem to trigger properly in OS X. According to the Mozilla Keyboard Planning FAQ and Cross Reference‘s Macintosh Keyboard Differences section, this shouldn’t be a problem, but I’ve given up on figuring out OS X’s keyboard related funkiness.