Continuing the trend of giving plugs to my coworker's software.  2 months ago, a couple of my coworkers took what was a in house security project to the open source world.  Since then, the tool has been getting pretty good comments/reviews due to the positive impact it can have on the security ecosystem.  It is called !exploitable and it's available here: http://www.codeplex.com/msecdbg.  Like !analyze, this tool works within the Microsoft debugger WinDBG.  It basically analyzes a crash file, and tell you whether that crash is potentially exploitable.