Welcome to this blog, created entirely for the purpose of drawing attention to more obscure animated features. It's not a great blog right now, but it will continue to get better each day, so please come back or I'm just wasting my time.
The first film that I feel is worthy of more attention(even if I haven't seen it), but as of yet has not been released on DVD or VHS is an avant-garde musical from artist and filmmaker Gyorgy Kovasznai called Foam Bath, which has some amazing artwork. There is an entire research center in Hungary devoted to his achievements and here is their website with five short films and select works of his art from the 50's to the 80's. Be cautioned that there is some nudity which some people might find objectionable.
Further contact information can be found on the site, and to have a snowball's chance of seeing this movie, contact them and see what sort of response you get.
Update: June 3rd, 2008 Below
I've found a short video on Vimeo with several clips from Foam Bath and several of Kovasznai's shorts. Many thanks to Kultplay for uploading this short video. You can find the blog through the Vimeo link, but it's in Hungarian, so I won't link to it directly as it would likely be of little use to the only person who's currently reading this blog.