There are 2 scenes in Project Hail Mary that show Ryan Gosling's genuine reaction

I love BTS stories like these.
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Actors deliver unscripted reactions during famous movie scenes

Bobby Moore highlights moments where actors delivered unscripted reactions during famous movie scenes.

Cooper Hoffman Reveals His Mom’s Reaction to Olivia Wilde BDSM Scenes

Cooper Hoffman says his mom, Mimi O’Donnell, enjoyed his new movie, I Want Your Sex, with Olivia Wilde. However, the ...