June 23, 1968-September 8, 1968. In 1967 Glen Campbell began appearing regularly on "The Smothers Brothers Comedy Hour," and in 1968 he hosted their summer replacement series, "The Summer Brothers Smothers Show." Regulars on that show included Pat Paulsen.
February 5, 1967-June 8, 1969. "The Smothers Brothers Comedy Hour" was a breath of fresh air, but to CBS the Smothers Brothers seemed to be in the wrong place at the wrong time, with the wrong things to say.