There are big SPOILERS ahead... so if you haven't seen Fantastic Beasts and Where to Find Them, leave now!
Dumbledore isn't actually in the film, but he is mentioned. Apparently he taught Newt and was very fond of him. We're told that Dumbledore will appear in the next film though!
In 1926 New York, House Elves do more than just wash laundry and prepare meals. Just look at the singer in the The Blind Pig proves. What would Dobby and Creacher think about this?
In the Harry Potter books and films, the Lestrange family are some of Voldemort's most loyal servants, like Bellatrix. Newt's lost love, Leta Lestrange, is from the same family.
The villain Gellert Grindelwald is seen briefly in The Deathly Hallows. Harry reads about him and Voldemort meets him on his search for the Elder Wand.
There's no denying it - Newt is coolest wizard ever sorted into Hufflepuff. How do we know he's a Hufflepuff? The scarf of course!
We fell for it with Mad Eye Moody in The Goblet of Fire. And we fell for it again with Percival Graves in Fantastic Beasts. Don't we all feel silly?