The fact that when I tab through a form on my Mac, it skips the drop downs, which forces me to use the mouse, has been bugging me for a long time. I finally decided to try searching google for an answer and came upon this old, but still very relevant post by Tony Spencer:
http://www.tonyspencer.com/2006/05/02/tab-skips-select-form-fields-in-mac-browsers/
Awesome. The only difference between 2006 and now (Snow Leopard) is that in System Preferences, Keyboard and Mouse have been split into two separate menus, so you should go System Preferences >> Keyboard >> Keyboard Shortcuts to find the ‘All controls’ radio button.
