FontSee

tSee is a fast, practical way to view all of the fonts installed on your system from the Dashboard. The widget has a small text box where you can type a string of characters and see how they will look in different fonts. FontSee has controls that allow you to move forward and back through your collection of fonts. You can also flip through the fonts automatically. The fonts change every three seconds, but you can adjust the frequency. You can also adjust the size of the font.