Wow! I have to say that the creative energy that was in the room was contagious. You couldn't help but get excited about all the things that AIR makes possible. The demos, even the brief Buzzword demo from Ryan, were amazing.
As a UI person, the thing that puts these AIR apps above many other apps is the commitment that their creators have made to the user experience. You definitely get the sense that serious thought was put into how their target users work. Does it mean that they weren't doing Agile? Not necessarily. Given the speed at which many of these apps were built, one might say that it couldn't be done without Agile. I don't have the answer. Perhaps someone who worked on Buzzword, Pownce, Finetune, TwitterCamp (Daniel did you design the UI too?) can post a comment and give us a clue how the UI design fit into your process.
Thanks to all those who gave me feedback on my TimeTracker. I will be incorporating many of the suggestions in coming versions.