If you go to Hirshhorn After Hours tonight, be sure to check out the Amy Sillman exhibit while you’re there. If tonight’s not in the cards, Third Person Singular runs through July 6th, so you’ve got some time. Painter Amy Sillman is one funny lady. In her artist talk at the Hirshhorn, her first words explain why she’s standing at the podium, “I’m only coming over here because I didn’t want to sit over there…