It was actually a 90-second 'demo reel' (with grease pencil marks still visible on the film), designed to sell the series to potential advertisers in the winter of 1959, depicting a scene from what would eventually become the episode 'The Swimming Pool'. Notes: This was the original pilot episode for The Flintstones, but was never shown with the original series. It was released on DVD in 2001 and again in 2004. The first 2 seasons were written by Warren Foster, Michael Maltese and Arthur Phillips.įirst released on The Flintstones: The Collector's Edition on VHS in 1994, it made its television debut on Cartoon Network on May 7, 1994, and aired again on Boomerang in November 2006.