| A lot of the mentions on the TV Tropes page are situations where the character thinks it is real but it is actually faked/staged. That's the opposite of The Man Who Knew Too Little.
 More from Straight Dope:
 Shadow of a Vampire - Everybody thinks they're just making Nosferatu but he's really a vampire.
 Life is Beautiful - Roberto Benigni convinces his son that the concentration camp their in is a complex game.
 My Name is Bruce - Bruce Campbell, action star, thinks he's on a lark.
 
 In the thinks it is real but it isn't camp:
 Last Action Hero
 Bolt
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