Here is a very interesting Documentary which i found on-line it tells one about the both sides of a hacker!

This alarming program reveals the daily battle between the Internet’s outlaws and the hackers who oppose them by warding off system attacks, training IT professionals and police officers, and watching cyberspace for signs of imminent infowar.
Through interviews with frontline personnel from the Department of Defense, NYPD’s computer crime squad, private detective firm Kroll Associates, X-Force Threat Analysis Service, and several notorious crackers, the program provides penetrating insights into the millions of hack attacks that occur annually in the U.S. – including one that affected the phone bills of millions and another that left confidential details of the B-1 stealth bomber in the hands of teenagers.
The liabilities of wireless networks, the Code Red worm, and online movie piracy are also discussed.