Macbook Pro Retina running at native resolution
See http://osxdaily.com/2012/06/18/3-ways-to-run-a-retina-macbook-pro-at-2880x1800-native-resolution/

There is no bundled way to do it yet, but four apps provide this ability:


  SwitchResX:
  A reasonably simple solution, SwitchResX is a third-party preference panel that allows you to run custom resolutions on any display. Install the preference panel, select the Retina Display, and add a custom resolution setting for 2880×1800.
  
  SetResX:
  Probably the easiest option of them all, SetResX is a little menu-bar app that allows you to run 2880×1800 easily.
  
  scrutil:
  Slightly more advanced due to the nature of the command line, the free utility called screenutil gets the job done immediately with a quick entry into the Terminal.
  
  ChangeResolution: 
  ChangeResolution is a new tiny AppleScript front end to a command line utility that changes the resolution to 2880×1800.