Barbenheimer

Robert Downey Jr. has publicly praised Timothée Chalamet, calling him one of the greats just as the Dune star’s box office power is under the spotlight. What does this mean for the next big cinema showdown?

Robert Downey Jr. and Timothée Chalamet share a laugh over the December 2026 clash between Avengers: Doomsday and Dune: Part 3, playfully dubbing the event 'Dunesday.'

Two cinematic giants are poised for a dramatic face-off as Robert Downey Jr.'s Avengers: Doomsday and Timothée Chalamet's Dune 3 both land on the same December release date. Who will come out on top?

Before Dunesday and Barbenheimer, Hollywood saw epic box office rivalries that changed the industry. Discover the most memorable film clashes and what they revealed about audiences.