What do you want on your clock? With Dock Clock you decide. Either pick one of the beautiful presets or create your own clock. Options include face color, border width and more.
What information do you want on your clock? If the AM/PM just clutters the icon you can dispose of it with a click. Want roman numerals instead of numbers? You can do that too.
Is your computer displaying the wrong time? With as little as two clicks you can access the Date and Time system preference pane.