Gizmo! - love it, and wish there was a soundtrack album too; great songs! The Bear - Raymond Briggs - the original non-narrated, uncensored one Richard Williams’ A Christmas Carol - Oscar winner, yet remains unreleased The CBS Christmas Carol, aka the Flamin’ Marley version. MIA.
"Myrt And Marge" -- 1933 film based on the radio show, featuring Ted Healy and the Three Stooges. I don't think it was ever even released on VHS. Cinemax showed it a few times in the late 1980s along with some of the 1960s Three Stooges feature films.
Concerning Richard Williams, it seems he often takes a long time to get some of his projects completed. An example of this is the movie The Thief and the Cobbler, which took more that 20 years to be released.
The Star Wars Christmas Special (probably never to be released again along with the Ewok movies made for TV).
All This and World War II (1976) - Beatles covers buy well known artists. Never seen an official home video release, must likely due to rights and lack of interest. Rocktober Blood (1984) - Released on VHS in the 80's via Vestron Video and Laserdisc in Japan. Technically, never released on DVD or BluRay. An "official" BD-R was released by one of the actors to the outrage of fans. It was sourced from a VHS master. Stoogemania (1986) - a tribute to The Three Stooges. Some royalty free shorts framed around the story of a Stooge obsessed fan. Revieved a VHS release only. Kill Squad (1982) - Martial arts, revenge film. VHS/Beta release only. Blood Circus (1987) - A wrestling, sci-fi movie that is legendary in bad movie circles. Was financed by TV-Shopping jeweller, Santo Gold (who even has a singing cameo in the film!?!). The print has been on eBay a few times (with no buyers). Shown once at it's premiere and has been lost since. Son of Dracula (1974) - Ringo and Harry Nilsson's infamous vampire flick. Never had a home release. Although Quentin Tarantino's New Beverly Theatre screen it in 2016. Beatlemania: The Movie (1981) - VHS/Beta/Laserdisc release. A bootleg DVD was released, but nothing official. The Compleat Beatles (1982) - VHS/Beta/Laserdisc releases, but nothing on DVD or BluRay.
This is on YouTube, transferred from a faded Eastman print and with Spanish subtitles to confuse Content ID.
A few more entries... Looking for Mr. Goodbar (1977) - Given the cast and that it's a film that's still referenced in popular culture, it's surprising that an official DVD has never surfaced. There has been some grey market releases of the VHS/Beta/LD pan and scan version. The Godfather Saga (1977/1990) - unlikely to see a DVD or BluRay release. Meet The Applegates (1989) - an underrated sci-fi comedy that hasn't made a home release past VHS and LD.
One thing fans of this film have been after (and is not on the recent BluRay) is Dan's original R-rated cut of the film when it was called Valkenvania. The original poster sets the tone of the movie more than the bland "floating heads" version we got. The Lost World of Valkenvania: Celebrating Dan Aykroyd's 'Nothing but Trouble' - MovieBabble