At a video-related software dev house, I lead a team of hard working Quality Assurance professionals. We would test daily builds of a dvd authoring software package that was to be shipped out with new computer models from a variety of OEM's.
To ensure a prestine testing environment and to mirror the 'clean' operating system in which our software would reside within the various OEM systems, we would reset our testing machines' operating systems back to default settings with the use of a popular application, Ghost.
The only problem was that it took several steps and, well, wouldn't it be nice if one could simply turn on the test system, pick an OS from a menu, and ghost?
So I created just that - a boot floppy that would load a menu from itself that then would restore the main hard drive boot partition from clean ghosts of whatever testing operating systems resided on the second hd partition.
One simply had to insert the floppy, turn on the system, pick an OS, have a coffee, and then enjoy a prestine test environment.
This was a big hit in the testing lab and for all Quality Assurance professionals in the building and went a long way to making our product a real work of beauty.