Scooby-Doo
The first episode of "Scooby-Doo, Where Are You!" "What a Night for a Knight" debuted on the CBS network Saturday, September 13, 1969. The original voice cast featured veteran voice actor Don Messick as Scooby-Doo, radio DJ Casey Kasem (later host of radio's syndicated "American Top 40") as Shaggy, actor Frank Welker (later a veteran voice actor in his own right) as Fred, actress Nicole Jaffe as Velma, and musician Indira Stefanianna Christopherson as Daphne. Scooby's speech patterns closely resembled an earlier cartoon dog, Astro from "The Jetsons" (1962–63), also voiced by Messick. Seventeen episodes of "Scooby-Doo Where are You!" were produced in 1969–70. The series theme song was written by David Mook and Ben Raleigh, and performed by Larry Marks.
Scooby-Doo, Where Are You!
On July 4, 2002, Warner Home Video released four episodes from the series on a compilation DVD in Region 1 entitled "Scooby-Doo's Creepiest Capers". They later released all 25 episodes on DVD in Region 1 on March 16, 2004 under the title "Scooby-Doo, Where Are You! The Complete First and Second Seasons". A DVD entitled "Scooby-Doo, Where Are You! The Complete Third Season" was released on April 10, 2007, made up of episodes produced in 1978, added to the "Scooby's All-Stars" package, and later syndicated as part of "The Scooby-Doo Show".