In the mid-70's, Hanna-Barbera renewed their efforts to produce live-action programming. However, the Saturday morning series, Korg: 70,000 BC, lasted just 1 season at ABC, as far as first-run episodes went.
Four years later, H-B sold The Hanna-Barbera Happy Hour to NBC, and that lasted about a month (previously reviewed). The network also aired the movies, "KISS Meets The Phantom of The Park" and "The Beasts Are on The Streets".
But CBS wasn't left out of the picture after all.
The "Tiffany of The Networks" was home to a studio-produced documentary at Thanksgiving 1977, ahead of Bill Hanna & Joe Barbera's 40th anniversary as a team. The following summer, they sold a pilot to CBS, which suddenly had cold feet and couldn't bring themselves to air the pilot when it was scheduled in August 1978.
The Funny World of Fred & Bunni was set up as a variety show vehicle for impressionist-singer-songwriter Fred Travalena (ex-The Kopykats), who'd later work for the studio on Shirt Tales (1982-4). Here, the "Bunni" in the title is an animated female acting as Fred's "conscience", as it were. Sources say that future talk show icon Kathie Lee Gifford (then still known as Kathie Lee Johnson) was the voice of Bunni. Kathie Lee was in between gigs, having left Name That Tune, and Hee Haw Honeys would debut in the fall of '78.
On stage, Fred is joined by Pat Harrington (One Day at a Time) and, as shown in this sample clip, Sandy Duncan. Video trickery enables Fred to impersonate Paul Williams, as well as Frank Sinatra, Barry Manilow, Anthony Newley, and Fonzie (Henry Winkler), all in the same sequence.