Windows NT: The Godzilla of Operating Systems

I worked for Microsoft during 1990 to 1993 on the Visual Studio team. During the end of that period, Windows NT was being developed and about to be released. I didn't work on the main operating system--my job was to help get MFC ported on the new platform. We would receive various builds and they would run slowly on the computers in our office. Someone in the company (not me) got frustrated with the performance issues and created this splash screen as a joke. I always found it to be funny and have saved it on my hard drive for over ten years. I wonder if people on the Windows Vista team have done any pranks like this?