SDCC/Warner Bros./Legendary

Robert Downey Jr. and Timothée Chalamet want you to have a 'Dunesday' double feature

Originally posted on Nerdist | By Tai Gooden | Last updated Jan 15, 2026 11:45 AM ET

Remember Barbenheimer? It was quite the fun time at the theater as fans watched the unexpected double feature of Oppenheimer and Barbie. Well, we have a chance to create that magic once again with two movies that have a little more nerdy connective tissue. On December 18, Dune: Part Three and Avengers: Doomsday will both hit theaters. Those are certainly two movies that many nerds will wanna see. Robert Downey Jr and Timothée Chalamet both know this and they even have a name for their double feature: Dunesday.

Robert Downey Jr. and Timothée Chalamet on ‘AVENGERS: DOOMSDAY’ and ‘DUNE: PART 3’ releasing on the same day:

“We both have films opening on December 18th, and we decided to coin a name for it. We’re thinking ‘DUNESDAY.’”

(via @timotheenation)

pic.twitter.com/FtnyR3c2Kz
— Avengers Updates (@AvengersUpdated) January 15, 2026

The duo appeared onstage together in Los Angeles for a Marty Supreme screening. When the topic of Dune: Part Three and Avengers: Doomsday releasing on the same day came up, RDJ had this to say, “We both have films opening on December 18, and we decided to coin it … We’re thinking Dunesday.”

We are pretty sure that neither movie necessarily needs a boost from the other. Both universes have a swath of dedicated fans. But it certainly doesn’t hurt if they join nerdy forces and encourage fans to have a Dunesday weekend. We are sure that Dunesday double feature watching will rake in billions for Avengers: Doomsday and Dune: Part Three!

Editor’s Note: Nerdist is a subsidiary of Legendary Digital Networks.

This article first appeared on Nerdist and was syndicated with permission.

More must-reads: