The Big Lebowski star told fans he and the funnyman/actor filmed The Fisher King nearby and he had Williams on his mind as he took to the stage.
He said, "This is my first time here so be nice to me; I'm a virgin. This is a very special occasion. And speaking of occasions Robin Williams and I shot The Fisher King near here. I wrote something about Robin on my website. I'm going to dedicate this show to Robin Williams. This is for you Rob!"