A few years ago I posted on DaRT after having seen it: Microsoft Diagnostics and Recovery Toolset. It is a really good an interesting tool for a lot of problems, one of them being incident response. I just stumbled across one article describing this: Using the Microsoft Diagnostics and Recovery Toolset (DaRT) for Incident Response.
An overview over DaRT can be found here. To prelude rants and questions: DaRT is part of the Microsoft Desktop Optimization package and cannot be downloaded from our website