Two tools that I use frequently when troubleshot issues on servers are Process Explorer and Process Monitor. Since these are not windows built in tools (though they owned by Microsoft), I always have to go to Sysinternals site and download them one by one.
I just notice that SysInternals tools are accessible over a public UNC, all I need to do now to get latest system internals tools is just access \\live.sysinternals.com\tools. Great time saver!
