I listen to the Javascript Jabber podcast. One talk was on Backbone. Jeremy Ashkenas was a guest, and I was really looking forward to listening to it. Yehuda was also on the call as a host.
Throughout the call Yehuda repeatedly interrupted and contradicted Jeremy. He would go off on tangents for several minutes, talking about his own work. The main host tried to re-direct the conversation but Yehuda was consistently interrupting. Apart from him not having good manners as a host, I felt like Yehuda really got in the way of my learning more about Backbone. He kind of ruined that podcast for me.
And I might not be alone. Ever since a few shows after that episode he hasn't returned to Javascript Jabber.
Sometimes people don't know how they're perceived until public reactions like these. I hope this helps him understand more about himself and how he affects others.