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'Thor: Ragnarok' cast crashes screening to act out movie live

One lucky audience was thunderstruck when the God of Thunder showed up in a bad wig, and his co-stars soon joined him.

No one likes interruptions during a movie. Except maybe this one. 

Talk-show host James Corden halted an advance showing of "Thor: Ragnarok" at Pacific Theatres at the Grove in Los Angeles this week and spoke to the perplexed audience while stagehands set up goofy low-budget props. 

But then the attendees were thunderstruck as Chris Hemsworth, who plays Thor, showed up in the flesh (and a terrible wig). Hemsworth was soon joined by his fellow cast members Cate Blanchett, Tom Hiddleston, Tessa Thompson, Mark Ruffalo and Jeff Goldblum, who proceeded to act out a condensed version of the film.

Corden, host of "The Late Late Show with James Corden," told the audience they were experiencing 4D cinema, leaving a clueless Hemsworth to inquire, "What is 4D cinema again?"

"I think those poor people just want to watch the movie," declared Blanchett.

Watch the 11-minute video to check out what they were treated to instead (video contains possible movie spoilers). 

Highlights include a terribly flimsy Mjolnir, Ruffalo wearing his Hulk Hands on the wrong hands, Goldblum chomping popcorn and watching with the crowd as well as Blanchett's oh-so-adorable stuffed guard dog.