Here's a collection of live saving tools suitable for system management, troubleshooting and diagnostics by Mark Russinovich and Bryce Cogswell.
http://technet.microsoft.com/en-us/sysinternals/0e18b180-9b7a-4c49-8120-c47c5a693683.aspx
http://technet.microsoft.com/en-us/sysinternals/0e18b180-9b7a-4c49-8120-c47c5a693683.aspx