Hanna-Barbera's 50th: A Yabba Dabba Doo Celebration (also known as A Yabba Dabba Doo Celebration: 50 Years of Hanna-Barbera) is a 1989 American live-action/animated television special which premiered on TNT on July 17, 1989.
The special is hosted by that night's guest stars Tony Danza and Annie Potts celebrating 50 years of William Hanna and Joseph Barbera's partnership in animation. This is the first animated project to be broadcast in Dolby Surround sound system.
It covers their years working for the Metro-Goldwyn-Mayer cartoon studio and then the history of Hanna-Barbera Productions which was set up in 1957. It features footage and clips from the studio's various cartoons along with new animated/live-action wraparounds and a behind-the-scenes on the then-upcoming newcomer, Jetsons: The Movie.