There's some kind of film festival featuring Oomori related short films and Wonderful World's End at
K's Cinema called "The Moosic History of Seiko Oomori"... wonder if any of these short films will ever make it to the web or a DVD. Pretty sure I've actually seen the first one a while back. Also WWE is being shown in HD, so that means that there may still be chance of a future blu ray release.
http://www.ks-cinema.com/movie/oomoriseiko/
The plot of "トムソーヤーとハックルベリーフィンは死んだ" is quite intriguing- Oomori playing the role of a prostitute with an acoustic guitar???
I don't know how she manages to fit in all these little projects and still make top notch music at the same time. Crazy.
A couple 'trailers' I found:
Note: サマーセール has a soundtrack in the form of a CD-R, also knows as "Fuck movie, fuck him". This short film USED to be on youtube, and I was confused as to what it actually was. Now I'm kicking myself for not archiving it!