Enjoyable OP, but lol'd because it doesnt match the tone of the show.

Assassination Classroom is pretty okay. The animation quality exceeded what I expected. It gave a pretty good brief introduction to what happened, so I guess episode 0 wasnt too important (couldnt find a subbed version)

Durarara2 has more new characters. and there arent subtitles for the names in the OP
Aaaand there are way more other-anime references than usual.