Microsoft has made its excellent suite of Windows 'Sysinternals' utilities available over a network share. Apparently, according to Mark Russinovich (the Sysinternals guru) the purpose of doing this is to test out an alternative delivery mechanism for Sysinternals tools. But hey, we're not complaining.
Without further ado, here's the link: http://live.sysinternals.com/
You can also read up on Mark's blog for the latest information on these utilities and other cool ideas on where to use these utilities.