Forgive me if there was already a thread like this and my english.
As the topic states, what type of medium makes you hook/attach/immerse in the most(doesn't have to be otaku-related)?
(manga,anime,literature,light novel,visual novel,movie,TV series, etc.)
A medium that you can read/watch all day/week without realizing the sun has rise/set and you may probably think about it all the time while you do something else.