Silverman (communication arts, Valley City State U., North Dakota) describes the corporate censorship--as opposed to government censorship--of four television programs that aired on the four major broadcast networks between the 1967 and 2002. These are The Smothers Brothers Comedy Hour, The Richard Pryor Show, TV Nation, and Politically Incorrect with Bill Maher. He briefly traces the history of the government, commercial, and pressure-group regulatory forces that led to constraints on commercial network television in the US during the last half of the 20th century. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)