because potheads = worse than other people? *rolls eyes*

In the US...generally. It's all they talk about, at least the ones I'm pretty sure mistermumbles had in mind when typing his post. They have the tendency to be the most annoying people because all they ever talk about is either getting high, how high they are at the moment, or just gurgling their damn bongs over in-game chat. It's just...ugh.

When GOG introduced the movie section they claimed that their goal was to bring us "cinema classics" and "all-time favorite TV series" (their words, not mine). We've not seen a TV series yet and I find it difficult to call the documentaries on offer "cinema classics". GOG indicates that major Hollywood studios are unwilling to 'play ball'. But were are movies from independent studios like: Solaris, a Scanner Darkly, Donnie Darko, Night of the living Dead, Lost in translation, Bad lieutenant, Erasorhead, Memento, Clerks, Pi, THX-1138, Blue Velvet, the Usual Suspects, Dark Star, Little Miss Sunshine, Cube, Pitch Black, Swan (to name just a few titles)? These weren't made by big Hollywood studio's and are certainly widely regarded as cinema classics. I'd buy any of these titles without hesitation.

With only a few exceptions, all those movies you list are currently held by major movie distribution companies. They may have been made independently, but their distribution was handled by the likes of Fox, Warner Brothers, Sony, subsidiaries of those companies, etc. As long as the big guys hold the distribution rights, GOG is going to have a difficult time getting them to offer their films DRM free. Most of the movies GOG currently has available were both made and distributed independently, with no major studio involved in any aspect of the film, making them much easier to offer on GOG. Heck, at least one of these documentaries originally premiered on YouTube, that's how truly indie these films are.

For reference, here is how your list breaks down on distribution rights:
Solaris - Janus Films (Criterion Collection)
A Scanner Darkly - Warner Independent Pictures (Warner Brothers)
Donnie Darko - Newmarket Films
Night of the Living Dead - Walter Reade Organization
Lost in Translation - Focus Features (NBC/Universal)
Bad Lieutenant - Aries Fillms
Eraserhead - Libra Films International
Memento - Summit Entertainment (Lionsgate, though much of their distribution is administered by partner NBC/Universal)
Clerks - Buena Vista Pictures (Disney)
Pi - Artisan Entertainment (Lionsgate, again, NBC/Universal indirectly)
THX-1138 - Warner Brothers
Blue Velvet - Paramount Pictures
The Usual Suspects - originally Gramercy Pictures, which is now owned by Focus Features (NBC/Universal)
Dark Star - unknown, all the original distribution companies are defunct, which raises it's own familiar problems for GOG
Little Miss Sunshine - Fox Searchlight (20th Century Fox)
Cube - Trimark Studios (Lionsgate, again, NBC/Universal)
Pitch Black - Universal Pictures
Swan - I got no idea, looks like this one never saw a release outside the festival circuit

The only ones that seem likely to get a release here without major studio/distributor support might be Donnie Darko, Night of the Living Dead, Bad Lieutenant and Eraserhead. Solaris and the rest of the Criterion Collection is an interesting possibility too. I might be wrong about this, but I seem to remember Criterion's original DVD releases were actually DRM free. The ones with unclear rights are a big question mark. They are much like GOG's quest for classic games, where the original rights holders are no longer around or who does hold the rights is a real mystery. If GOG hadn't shown such tenacity in solving those mysteries in the past, I'd think we might never see those films at all, but GOG has surprised us more than once. The rest of them, I wouldn't count on any of them showing up for a while, but once GOG can convince one of those majors to give in to the DRM free way of life, we could see a flood of new content follow.

This movie kinda reminds me of that movie with the guy who started his own fake college

yeah I agree that sounds quite annoying :)
But yeah it's just you know there are tons of people who don't act like that and still produce something useful, like music, and... movies, games... who could be called potheads through their ventures into certain consumptive things.
And I agree calling gamers potheads is equally annoying.
But hey let it be, like the famous potheads Beatles sang :)

It's not even that simple. For Donnie Darko, for example, the cinema rights are held by Newmarket - but the home distribution rights are held by 20th Century Fox in the US, and by two dozen other companies worldwide. This would be either home distro or, if they can swing it (and contracts are generally written to stop stuff like this from happening), a new market. For home distro, they would have to clear rights from each and every company that holds them, or in the alternative they would only be able to offer the download to people from the regions that have been cleared.

Criterion is an interesting proposition. They don't hold rights to distribute the original films, but they do hold rights to the Criterion edition product, as seen by deals with Hulu and the like. Hulu is a region-locked service - they know where you are because they bill you there - which allows control when only certain distributors may be on board. And Criterion upgrades the product, so they have some control over their releases since they have done restoration and retracking and such. If Criterion came on board, that would be spectacular news.

The only really likely release is Night of the Living Dead, which is in the public domain, except for the sound, which is a matter of dispute (or it was last time I checked, which was casually and a while back).

Bad Lieutenant released restricted home media rights to Artisan for DVD and VHS for the USA (Laserdisc rights are also out), and Lionsgate for all (other?) media for North America - if Lionsgate was interested, this could happen, and it would be great news because they are a smart small-origin company with a vast current collection.

Donnie Darko's home rights are, as noted, held by 20th Century Fox. Eraserhead has current rights with a few small distro companies in various countries; the USA rights were sold to IRS Media in 1984, and it's possible these 30 years later that this license has expired.

Oh absolutely, if it were simple, we wouldn't even be having this discussion. The fact that you have details that I never encountered about films like Donnie Darko shows just how complicated this whole thing can be (to be fair, I only did a cursory Google search, not in-depth research into the distribution rights). I was just posting in one of the other threads on this subject how the movie situation is virtually identical to the early days of GOG, when they only had 2 or 3 small or nearly defunct publishers on board and nobody believed they could ever get anyone big like Activision or EA here. We put up with weekly releases that were definitely old, but often stretched the definition of the terms "classic" and "good", for a long time before any of the bigger publishers decided to dip their toes in the DRM free pool. Often times the problem was not necessarily who developed or who originally published a game, but rather who had the authority to grant worldwide distribution rights to GOG and how that might impact existing distribution contracts. Somehow GOG managed to work around that and arrange deals that got them the games. While the movie industry is not the same as the game industry and is arguably more opposed to DRM free, the same process applies. It was almost a full year before GOG got its first big name publisher on board, nearly another year on top of that for the second and it's taken six years of hard work for them to get where they are today. They only started offering movies a month ago. I think they might need a little more time to work out some of the complex details.

gonna see that flick

I thought as much, which pretty much means that GOG will never ever reach it's goal of bringing us 'cinema classics' of 'all-time favorite TV shows'. So all they will be offering is truly indie films which mostly consist of documentaries. Which is why I wonder why they even bothered to bring up the "cinema classics" and "all-time favorite TV shows" at all. Because now that they have done this I will remain to be disappointed every time they introduce something that doesn't fit one of these categories.

It means nothing of the sort. As GOG has stated multiple times now, pretty much all the major distributors admit that DRM is a waste of time, but none of them is currently willing to be the first to go DRM free. GOG has been in this situation before when they first launched the site without content from any of the major game publishers. None of the publishers wanted to be the first; it took time, years even, for them to convince the big guys to come around, but they eventually did it and now they have games from nearly all the major gaming companies. Much like the movies, they fairly boldly stated their goal was to get every classic game from every major publisher on the site and they have virtually met that goal today (there are still a few holdouts not here yet). It's going to again take some time, perhaps years again, but all they have to do is get one major distributor to give it a successful shot and the rest will follow. It happened when they got UbiSoft to sign on in 2009, it can happen again with Disney or Fox or Paramount or WB or whomever. It is way WAY too soon to say this is going to be a failure, we haven't given it enough time to actually fail yet. Based on GOG's history, success is far more likely.

You've made a convincing argument. the GOG team hás surprised us before. I personally thought we'd never get the much wanted Linux support and yet we did. So yes, it could still happen. Their best bet would probably be to get a small, but influential film maker to host it's movie on GOG. Especially if they can find someone who enjoys gaming, he or she might be more willing to take the first step.