For this one I am going to give you word for word the review I found on Amazon:
“Striking images abound in the twisty, surreal thriller Stay: Walruses rubbing up against the glass in an aquarium; a corridor painted neon green; entire crowds composed of twins and triplets; a piano being lifted several stories in the air. The plot is impossible to encapsulate: A psychiatrist named Sam (Ewan McGregor, Trainspotting) takes on a colleague’s patient, Henry (Ryan Gosling, The Notebook), who announces his intention to kill himself. As Sam pursues Henry, hoping to save him, the world around them begins to fracture and distort–until the movie’s conclusion, which may induce viewers to argue loudly about whether or not it makes sense. But Stay’s weakness isn’t whether it coheres, but its terrible dialogue. David Lynch movies (a clear influence) work in part because the dialogue is usually simple, even banal, and doesn’t compete with the rich chaos of the visual images and narrative turns. Stay’s dialogue, full of portents, interferes with an intriguingly corrupt (in the sense that digital information corrupts) storyline and eerily dislocated visuals; try watching it with the sound off. Also featuring Naomi Watts (Mulholland Drive), with brief appearances by Janeane Garofalo (The Minus Man), Bob Hoskins (Mona Lisa), and other familiar faces.” —Bret Fetzer
Yep, that about sums it up ~ the movie was disjointed, the dialogue was dismal.
The twist ending was asburd. The plot may have been salvagable, with a different ending. The twist ending does present an interesting idea, however. Had it been explored by a more competent storyteller we may have been presented an intriguing film. This one just left me shaking my head at the time I wasted watching it.
But I give it 1 out of 5 anyway, because I have a couple of friends who like that sort of thing.
Rotten Tomatoes: Critics 26%; Audience 66%