Matthew's desk was removed after his being fired. The head shot of a woman that was taped to the side of his computer is now taped to the side of Beth's computer.
Dave mentions that Bill's proposed act is similar to that of Mark Russell, an American political satirist and comedian. Best known for bringing his Washington nightclub act to PBS television between 1975 and 2004, his act was a mix of political stand-up humor and musical parodies regarding current events. He accompanied himself on an American flag-themed piano. [Source: Wikipedia article on Mark Russell]