Spider-Man: Into the Spider-Verse and it isn't even close. That movie is magic and nearly perfect. Brilliant writing, beautiful and groundbreaking animation, and perfect vocal casting. It is a gorgeous film that reinvents this genre and kind of exposes how creative you can still be with Marvel properties (ahem) while giving us easily the best version of Peter Parker we've ever seen in a movie and doing a superb job of introducing the world to Miles Morales and Spider-Gwen (both of whom I like better here than their comic book alternatives). It is also a wildly entertaining movie.
The rest:
2. Black Panther (9/10)
3. Deadpool 2 (8/10)
4. Avengers: Infinity War (6.5/10)
5. Aquaman (5.5/10)
6. Ant-Man and the Wasp (5/10)
7. Venom (4/10)