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.
The Scooby &amp; Scrappy-Doo/Puppy Hour
"Scooby-Doo & Scrappy-Doo:" Scooby-Doo, Scrappy-Doo and Shaggy Rogers travel across the country as the "Fearless Detective Agency" and get involved in typical spy or criminal cases."Scrappy & Yabba-Doo:" Scrappy-Doo's adventures with his uncle Yabba-Doo and Deputy Dusty in the wild west.The adventures of Petey the Puppy and his friends – Dolly, Dash, Duke and Lucky – as they travel around the world together searching for his young owner Tommy and his family.