It's a Wes Anderson film, with puppets. Formal framing, great design, hip music, quirky characters talking directly to camera. Plus Bill Murray. And Jason Schwartzman. In short, it's stop-motion animation, but not as we know it.
Just a shame they didn't figure Roald Dahl's name was worth mentioning. "Based on the book by the author of Charlie And The Chocolate Factory." Pur-lease.