Last week I gave a talk at the SD Forum Web Services SIG. This was a great crowd, with lots of questions. I love interacting with the audience when I talk; its the best way to know that they are grokking what I say. My standard PowerPoint has about one hour worth of material. It took me about 2.5 hours to get through it that night, which was great. I had a similar experience at the Boston Dot Net User Group last year.
Frank Cohen of the PushToTest blog wrote an excellent review of my talk.