The Operative System for Penetration testing

Hi all,
I'm back, today I'd like to talk about Penetration Testing.

I read "Penetration Tester's Open Source Toolkit, Third Edition" and I really enjoy it.
I recommend to you if you are interested on Testing.
This book explains the steps to make a good Penetration Test and how to write documentations.
http://www.amazon.com/Penetration-Testers-Source-Toolkit-Third/dp/1597496278/ref=sr_1_sc_1?s=books&ie=UTF8&qid=1320617698&sr=1-1-spell

If you want to perform a Pen Test the right instrument is Linux Back Track.
In the following link, you can get a "ISO".
http://www.backtrack-linux.org/
When I saw the first time BackTrack distribution I thought "It's like Matrix, a lot of Army"

  Below a short video when I Run Back Track 5 from Linux Natty 11.04.

See you sooner
Angelo Luciani