I watched Hana to Alice Satsujin Jiken.
It has some kind of weird mix of 3d and rotoscoping, not the prettiest of sights.
I really liked it though, not sure why but it was just so different from regular movies.
I watched the live action movie from like 2004 after and that was really super good. If anyone is into cinematography you should definitely watch the live action, it's quite strangely filmed.
Also saw Koe no Katachi movie that kyoani did and that was quite good. Their animation style seemed a lot more mature in it than usual. I'd say by kyonai standards the movie was maybe a bit weak but by regular industry standards it's still very good. Maybe I'm just jaded from reading the manga though.