Yabba Dabba Doo! The Happy World of Hanna-Barbera1977· Directed by Marshall Flaum★ 0.0 (0 votes)·120 minDocumentaryAnimationCelebrates the 20th anniversary of the Hanna-Barbera partnership.TMDbIMDbSign in to log / rateFind similarcastcrewdetailsgenresavailabilityGene Kellyas Self - HostLorne Greeneas SelfCloris Leachmanas SelfJonathan Wintersas Self