Note that all of these setups account for usage of Full Screen. If you have Overscan enabled, you will see that each part of the screen will be cut off a little bit, creating a more zoomed in picture. This completely changes the visual cues you need to use and you should disable Overscan on your TV.

Ricky's setup: yamanaru's setup (extra visual cues that may work): onetabloid's setup: Xem's explanation of tabs setup: