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 written, directed and produced by Marshall Flaum, which premiered on TNT on July 17, 1989. It is hosted by Tony Danza, along with Annie Potts; it also stars Whoopi Goldberg, Betty White, Sammy Davis Jr., Tommy Lasorda, Jonathan Winters, Phyllis Diller, Valerie Harper, Shari Belafonte, Joe Ferguson and Tiffany.

Summary 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, 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 segment on the then-upcoming Jetsons: The Movie.

The special was dedicated to the loving memory of Daws Butler, who died during its production, and it was also the last television and film project of both Mel Blanc and George O'Hanlon, who died before the special's telecast. Turner Broadcasting System, which owned TNT, would later purchase Hanna-Barbera in 1991.

Cartoon characters Among the cartoon characters that appear in this special are the following:

Astro Atom Ant Augie Doggie and Doggie Daddy Baba Looey Bamm-Bamm Rubble Barney Rubble Betty Rubble Boo-Boo Bear Brainy Smurf Breezly Bruin Choo-Choo Cindy Bear Dick Dastardly Ding-A-Ling Wolf Dino Dum Dum Elroy Jetson Fancy-Fancy Fluid-Man Fred Flintstone George Jetson Hokey Wolf Hong Kong Phooey Huckleberry Hound Jane Jetson Jerry Mouse Judy Jetson Magilla Gorilla Mildew Wolf Muttley Papa Smurf Pebbles Flintstone Peter Potamus Pixie and Dixie Punkin' Puss Quick Draw McGraw Rosie the Robot Maid Ruff and Reddy Scooby-Doo Scrappy-Doo Secret Squirrel Shaggy Rogers Smurfette Snagglepuss Sneezly Seal Snooper and Blabber Snuffles Squiddly Diddly Tom Cat Top Cat Touché Turtle Wally Gator Wilma Flintstone Winsome Witch Yogi Bear

Celebrities Tony Danza (host) Annie Potts (co-host) Betty White Joe Ferguson Jonathan Winters Phyllis Diller Sammy Davis Jr. Shari Belafonte Tiffany Tommy Lasorda Valerie Harper Victor Borge Whoopi Goldberg

Voices Greg Burson as Yogi Bear, Huckleberry Hound, Quick Draw McGraw, Snagglepuss and Snuffles Danny Goldman as Brainy Smurf Casey Kasem as Shaggy Rogers Don Messick as Scooby-Doo, Boo-Boo Bear, Muttley and Papa Smurf Greg Berg as Baba Looey and Augie Doggie Henry Corden as Fred Flintstone Jean Vander Pyl as Wilma Flintstone George O'Hanlon as George Jetson John Stephenson as Doggie Daddy and Snooper Mel Blanc as Barney Rubble Lucille Bliss as Smurfette Penny Singleton as Jane Jetson

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