There is a locker behind a wall in Craterside Supply that holds all of the Megaton House appliances.
You can open the door that houses the Experimental MIRV by pressing the switch behind the door.
All the boarded up houses around the Capital Wasteland have an "Open/Close Door" option.
Everyone knows the Project Purity glitch, so don't mention that one.
Does anyone out there know any other little tricks you can do with this glitch?
^_^