My favourite manga films are currently “Ghost
in a shell” and of course the core “Akira”.
I also watch the children’s manga series on TV like for
example “Card captors” from time to time, but tend
to find them kind of low budget compared to proper full length
manga films. Still though, they are sources for learning manga
drawing.
I also experiment with the more erotic styles of manga. Maybe
because hentai (the erotic side of manga) is the most common
style featured on the internet. There has to be said that all
hentai isn't 'filthy', and there are some brilliant pieces of
hentai artwork to be found on the net. If you are going to look
for hentai on the internet, be prepared for a shock as there
is a lot of the more questionable artwork out there.