This is a video on how to hack a wireless network.
As mentioned on Lifehacker where I found this video, this is a purely educational post. Be aware that wireless networks are not secure.
Lifehacker post
http://lifehacker.com/5459822/crack-a-wi+fi-networks-wep-password-with-backtrack-the-fancy-video-version?skyline=true&s=i&autoplay=true
Original post (Tinkernut)
http://www.tinkernut.com/archives/1482