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! WrestleMania Mystery
In its television premiere on Cartoon Network's "Flicks" on Saturday, July 26, 2014, the movie was retitled "Scooby-Doo! The WWE Mystery" and the event the gang are in WWE City to witness was renamed "SuperStar-Mania". No reason was given by the network for the changes in the film dialogue or title. This movie is the first of the animated films to get a TV-PG rating for "violence" due to the plot of the film involving wrestling. All previous "Scooby-Doo" animated movies received a TV-Y7-FV rating.