I had the wonderful opportunity to speak at 360iDev this year. My talk, entitled How to Break Your Apps Before I Do, covers some of the methods and mentality of a good QA person, as well as how developers can get the most out of testing.
The conference organizers, John and Nicole Wilker, have generously decided to make the session recordings available to everybody for free this year. Those interested can check out the recording of my talk, as well as all of the other sessions.
The slide deck is also available.