We had a similar situation at our local PHP user group for a while. Someone would present something and it would always lead in to some sort of related by unrel

We had a similar situation at our local PHP user group for a while. Someone would present something and it would always lead in to some sort of related by unrelated demo by one of the event organizers. I remember fondly a guy from Viacom talking about his CDN and how hard it is to maintain internal consistency and how they deploy and everyone was really engaged (it was an amazing presentation, even though he did it with just bash and firefox) and it devolved into this event organizer talking about his Solr install and the conversation basically ceased. It can be really frustrating when someone is constantly 'that guy.'