The Flintstones' 25th Anniversary Celebration was a 60-minute live-action and animated Television special] first aired on CBS on May 20, 1986, hosted by Tim Conway and Harvey Korman. Produced by Hanna-Barbera Productions in association with Robert Guenette Productions commemorating the 25th anniversary of television's first primetime animated series, The Flintstones, it featured clips from past episodes and spin-offs combined with new animation and musical segments.