The questions during the session. People ask me stuff like: "Is it better to go with WebBeans instead of EJBs?"The immediate feedback afterwards. I got immediately several emails with statements like: "I attended your presentation during Devoxx08, and I confess it was a relief to figure out it was not just me using EJB instead of ..."Devoxx was a great experience. I'm planning to spend more, than 4 hours next year at that conference :-).