If you need a crashdump to troubleshoot an issue with Windows that isn’t resulting in BSOD (lets say your logon does not complete and hangs on “loading user settings” or some such madness) you can use this process to force a crashdump for analysis.
http://msdn.microsoft.com/en-us/library/windows/hardware/ff545499(v=vs.85).aspx
please don’t use this to toy with your junior admins…. that would not be nice.