SOS (Son of Strike) is the hardcore tool for poking at the nastiest of .NET problems. I’ve written about it before, but if you want to see some of the best SOS spelunking around, make sure to check out Tess Ferrandez’ amazing blog: If broken it is, fix it you should. Let’s just put it this way: I am very glad I got my Bugslayer column before Tess started doing development and debugging. I wouldn’t have had a chance. Her blog should be your home page.