Nurse Betty (2000)
This is a sleeper, a dark comedy with enough inventive twists to call to mind The Truman Show but with a greater sense of reality to hold it down. Renee Zellweger is flawless as the naive, sweet, but utterly detached young woman named Betty who is addicted to a soap opera called "A Reason to Love." This seems sweet enough, but her husband is a jerk (totally) and things start to spiral, and get dizzy, as reality even for the viewer starts to shift ground.
Not that you are ever confused about what is happening or who the good guys are. The good guys are not Morgan Freeman and Chris Rock, for sure, as this unlikely and comedic father and son duo get involved, incidentally at first, in Betty's strange inner and outer life. A chase of sorts ensues, the soap opera becomes reality, and then reality becomes soap opera. And it's really hilarious and inventive and fast paced.
Is it a total work of genius? Probably not. Maybe Charlie Kaufman would have added another twist in there (I'm not sure how), and certainly some of the side characters could have seemed less cardboard, or less awkward as actors. But Zellweger is unbelievable (really, your jaw might drop at how convincing she could play her mental blindness, and her awakening, of sorts). And Morgan Freeman is his usually convincing and engaging self.
The utterly disgusting violence of one 20 second scene might turn off some viewers near the beginning, but if you can keep watching, the movie gets better from there. Much better.