One thing that always bug me allot in macosx was that you cant switch between options in a windows using the tab key, for example when the user wants turn off the macbook and press the power button, a menu Restart / Sleep / Cancel / Shut Down appears and we are obliged to reluctantly press the desired option with the mouse .. But this "bug" have a simple solution, after 2 years using the Mac i finally found the solution to this problem, the solution is very easy indeed. To resolve this simply go to System Preferences -> Mouse and Keyboard Settings -> Keyboard Shortcuts and select the option "All Controls" at the bottom.

Easy right? I wonder is why this option is not active by default... Go figure ...