Bill Cosby's scheduled stand-up show at Treasure Island in Las Vegas on Nov. 28 has been canceled "by mutual agreement," this according to a spokesperson for the casino. All tickets will be refunded. A representative for Cosby was not immediately available for comment. Another show, set for April in Virginia, was also canceled. Earlier on Friday, The Associated Press reported that an appearance Cosby was set to make in Tucson, Arizona at the Diamond Desert Casino on Feb.