Gilbert and Frank celebrate Shark Week with the screenwriter of "Jaws," "Jaws 2" and "Jaws 3-D," Carl Gottlieb, who discusses the birth of the Hollywood blockbuster, the ingenuity of Steven Spielberg, the effectiveness of "unseen horror" and the challenge of bringing the original "Jaws" to the screen. Also, John Belushi spoofs Richard Dreyfuss, Groucho guest hosts "Music Scene," Ringo battles the Abominable Snowman and Carl and Steve Martin team up for "The Jerk." PLUS: "The Absent-Minded Waiter"! "Son of the Invisible Man"! The Smothers Brothers vs. CBS! Sterling Hayden vs. the I.R.S.! And "The Jaws Log: The Musical"!