There are a couple of VI's that shipped with LabView 7.0, but you can't see the diagrams.
C:\Program Files\National Instruments\LabVIEW 7.0\resource\system\HelpServer.llb\Run Example Finder__NATIONAL INSTRUMENTS.vi
Press Ctrl-E on this VI and it prompts you for a password.
This VI is run by C:\Program Files\National Instruments\LabVIEW 7.0\resource\system\HelpServer.llb\HelpServer__NATIONAL INSTRUMENTS.vi
There's also C:\Program Files\National Instruments\LabVIEW 7.0\help\_exfinder.llb\Example Finder Launcher.vi.
Tyring to open this VI starts the NI Example Finder. Note the taskbar icon which is different from the normal VI icon.
It seems like NI is trying to keep us out, even if it used LabView to develop the Example Finder.