Crash On Demand

Registry Key
PS/2 Keyboard: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\i8042prt\Parameters
USB Keyboard: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\kbdhid\Parameters
Value: CrashOnCtrlScroll
Data Type: DWORD
Data: 1


[Link]
Forcing a System Crash from the Keyboard : http://msdn.microsoft.com/en-us/library/cc266483.aspx
Windows feature lets you generate a memory dump file by using the keyboard : http://support.microsoft.com/kb/244139
Overview of memory dump file options for Windows Vista, Windows Server 2008, Windows Server 2003, Windows XP, and Windows 2000 : http://support.microsoft.com/kb/254649/