The one I want more than any others from Paramount is a wonderful, pretty recent gem from the year 2000 called "Wonder Boys".
Directed by Curtis Hanson from a screenplay by Steve Kloves (adapting Michael Chabon's novel), starring Michael Douglas, Tobey Maguire, Robert Downey Jr., Francis McDormand, Katie Holmes, and with an Academy Award winning title song by Bob Dylan. It's in my top five movies of all time. Wonderful characters brought to life by a brilliant cast and great writing, with really top-notch work by everyone both in front and behind the camera.
Paramount first released it in February 2000 and it flopped hard (this has been attributed near universally to a dismal advertising campaign that completely misrepresented the movie), but they took the rare step of giving it a theatrical re-release later in the year, I believe October 2000, and they still botched the marketing campaign and it flopped twice in the same year. It's available in standard definition on DVD but that's about it -- you can't even get it in SD, much less HD, on the various online services like Vudu, iTunes, Amazon Instant, etc.
With Robert Downey Jr and Tobey Maguire huge stars now thanks to turns in Marvel-themed movies, and Michael Douglas about to join them on that list, there's probably a way to market the movie to an audience that loves those actors but has never heard of this movie. The writer Steve Kloves went on to write the screenplays for all of the Harry Potter movies (except for the fifth film), though "from the screenwriter of Harry Potter" might be a little unwieldy to print on a box cover.
I don't expect to ever get this film in HD, but it's got to be at the top of the list for me. I'd buy it in a heartbeat - and probably buy a bunch of copies to give to friends and family.