Masterpiece! Neon Genesis Evangelion is really something everyone should watch.
Good thing I already did next to Evangelion: 3.0+1.0 Thrice Upon a Time. To my surprise, they have their own spectacle ending to the Evangelion series. Though I think 3.0+1.0 has bit more story and sort of an good conclusion from the remade EVA film series than The End of Evangelion in my opinion.