Place phone calls from your home screen without opening the dialer app!
The widget offers a dial pad, shows your call log or all your contacts. The widget is resizeable and the log and contacts tab are scrollable too.
Also, you can fully customize the widget (change every color, text size, ...) and put the widget on your Lockscreen (later requires Android 4.2, I recommend to disable the "dialer"-tab when placing the widget on the lockscreen)