The Flintstones' 25th Anniversary Celebration was a 60-minute CBS live-action and animated television special produced by Hanna-Barbera Productions in association with Robert Guenette Productions commemorating the 25th anniversary of television's first primetime animated series, The Flintstones, which was broadcast on May 20, 1986. The special, hosted by Tim Conway, Harvey Korman and Vanna White, featured clips from past episodes and spin-offs combined with new animation and musical segments. Special guest appearances also included Telly Savalas, Susan Saint James and Jane Curtin. (thetvdb.com)