Backtrack2 pen testing toolset is very cool

I have access to the best commercial security test tools in the market including Mu Security's Security Analyzer and Core Security Technologies Core Impact. For a long time, however I've been a fan of open source security tool kits including STD. A couple days ago I became aware of Backtrack 2 when I was thumbing through one of the stacks of computer security books sitting on my bookshelf. (The book is Penetration Tester's Open Source Toolkit and you can read Richard Bejtlich damning and very informative review here (you have to scroll down a bit to get to Richard's post, but read some of the other reviews to get the full flavor of his American Idol reference.) But, I digress. I'm working my way through Backtrack2 in my lab testing, so I'll start at the top and say this looks like an excellent collection of no cost, penetration test tools....