The Truman Show (1998, Paramount, dir. Peter Weir) casts Jim Carrey as an insurance salesman living the perfect materialistic and slap-happy life in Florida, and even showing his butt to the screen, and then, whoops, he finds out his whole life is one big reality TV show.
In fact, they have put allow Southeastern US under a bubble just to make this show about Truman. Likeable Truman must escape the bubble.
Conceptually, this seems parallel to an idea in my 'Second Epiphany' screenplay, where at first it seems that a whole world inside an O'Neill Cylinder has been set up to solve the mysteries of 'Bill' (me) before humanity moves to another planet (maybe Proxima B after all?)