Rashmi Sinha and I created this graph of different UX research methods for User Experience Week in D.C. in 2006, and posted to remoteusability.com in 2007. This week, Christian Rohrers posted a similar yet more detailed graph of all user experience research methods on Alert Box. They are pretty similar, but I actually like his axis labels better, and the display of methods rather than tools. Especially because a bunch of the tools from 2006 are gone now. Ah, the web.