In OSX, is it possible to navigate the menu bar without using the mouse (such as the arrow keys)? I'm looking for something similar to how Windows does this – pressing Alt allows the arrow keys to navigate the menu bar, pressing Enter invokes the menu item. This is more ergonomic as my hands don't have to leave the keyboard to invoke menu items. I'm aware of the various keyboard shortcuts, but unfortunately not all menu items have them.
Followup: I discovered Full Keyboard Access which solves half the problem. With Full Keyboard Access set to All Controls, is there a key that activates the menu bar?