Mr. Boettcher and I had a great time this week. We talked all about doing wireless audits for PCI using Kismet and Aircrack-ng, and talked about some capabilities of both.
Alfa AWUS051NH (works in Kali/Backtrack) (no sponsor link): http://www.amazon.com/gp/offer-listing/B002BFO490/ref=dp_olp_0?ie=UTF8&condition=all
Using Karma with a pineapple to fool clients into connecting unencrypted: http://www.troyhunt.com/2013/04/your-mac-iphone-or-ipad-may-have-left.html
Tutorial on hacking various wireless: http://cecs.wright.edu/~pmateti/InternetSecurity/Lectures/WirelessHacks/Mateti-WirelessHacks.htm
Premium content by Bryan! I made a video as well that describes using your wireless dongle to make your Kali Linux into a powerful areal wireless sniffer. http://brakeingsecurity.com/bonus-kismet-video