If you loved WHAT DID JACK DO?, try The Cowboy and the Frenchman
A bridge between a film you've already seen and one most people haven't. The Cowboy and the Frenchman has roughly 6.8× fewer votes than WHAT DID JACK DO? — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by David Lynch, and they both carry the playful, surreal mood tags, and they sit in Comedy territory. If that's the register that drew you to WHAT DID JACK DO?, the second film will land in a comparable space — through a different lens.
playfulsurreal
What The Cowboy and the Frenchman is
Here's a film that knows exactly what it is, and isn't shy about showing it. A cowboy and his pals kidnap a fancy Frenchman out in the Wild West. It's certainly a thing that exists.

