Yesterday I went to the Flash Bus Tour to see David Hobby and Joe McNally speak about small flash photography. It was awesome!!! I learned so much. I've been following the Strobist blog and Flickr group for some time, so it was really great to see him talk about setting up a shot and going through all the steps. I was also really excited to see McNally and I actually learned a lot about my newest speedlight. I picked up an SB800 not too long ago and we weren't really on the best of terms yet.
I'm really excited about experimenting with the flashes now. I have three. I have two SB600s and an SB800. I've been itching to set up some experimental shot in the house or grab a friend and make them model for me so I can play with the speedlights.
Not really sure why Joe McNally calls himself "Numnuts"... If you have a chance to get to one of the dates, you should go.