The Flintstones as children, and yet others featuring Fred and Barney encountering Marvel Comics superhero The Thing and Al Capp's comic strip character The Shmoo – have appeared over the years. The original show also was adapted into a live-action film in 1994, and a prequel, "The Flintstones in Viva Rock Vegas", which followed in 2000. Unlike its sister show "The Jetsons" (the two shows appeared in a made-for-TV crossover movie in 1987), the revival programs were not widely syndicated or rerun alongside the original series. In 2011, it was announced "Family Guy" creator Seth MacFarlane would be reviving "The Flintstones" for
What a Cartoon! became the first spin-off of "What a Cartoon!" in 1996. Two more series based on shorts, "Johnny Bravo" and "Cow and Chicken", premiered in 1997, and "The Powerpuff Girls" became a weekly half-hour show in 1998. "Courage the Cowardly Dog" (spun off from the Oscar-nominated short "The Chicken from Outer Space") followed as the final spin-off in 1999. In addition, the "Cow and Chicken" short "I Am Weasel" eventually was also spun off into a separate series: in all, six cartoon series were ultimately launched by the "What a Cartoon!" project, any one of which earned enough money for the