Several years ago I went to an agile conference, actually the annual agile conference put on by the Agile Alliance. One of the sessions was a 90-minute workshop put on by an incredibly experienced agile practitioner. In fact he was one of the original 17 signatories of the Agile Manifesto.
I got to his session early and I’m glad I did. The room became packed, with every seat take about 15 minutes before the session was scheduled to start. Then the floor started to fill up. By the time he arrived, the room was over capacity and the anticipation was electric.