JAOO is the best technical conference I know of. All the speakers they invite are known to be working on cool stuff and known to be able to give good talks. They throw an amazing conference party, with the famous Danish chef "Chili John" Rasmussen cooking a wonderful buffet for 750 that's better than many restaurant meals prepared for only one. The party also features a rock supergroup called Absolute Girls made up of some of the finest female rock musicians in Denmark. How mint is that? In the conference schedule, they mark any talk that looks like a product pitch or marketing presentation with a red mark so you know to avoid it. The conference organizers are always on top of everything.
I was hoping to get invited to speak again this year, and I'm happy to say that I recently got my invitation -- yes!! I haven't come up with a title or abstract yet, but I'll likely speak either about multi-middleware services or about web services notifications.
Are you going? You should!