There is a new post at my Wind River blog, telling the story of how some of the Simics developers used Simics itself to debug an intermittent Simics program crash caused by a timing-sensitive race condition.
Running Simics on itself is pretty cool, and shows the power of the simulator and its applicability even to really complex software.
Nice catch!
This technique should be called SoS : Simics on Simics and will save your development.
Talking about computer simulations, check this movie: http://www.imdb.com/title/tt0139809/