Analysis of information sources in references of the Wikipedia article "Scooby-Doo (character)" in English language version.
Recording the original Scooby-Doo cast was one of the funniest, yet, most surreal sessions I directed while I was at Hanna-Barbera. Unfortunately, we couldn't get two of the original cast, Nicole Jaffe and Don Messick... Messick had then recently had a stroke. Greg Burson did the original recording of Scooby, but Cartoon Network didn't think he sounded Scooby enough, so we re-auditioned and gave the part to Hadley Kay. But Burson did get to stay in the episode as the Ghostly Gardener.