Oxygen is a French film starring Mélanie Laurent in an almost one-role movie. Liz (Laurent) wakes up in an automated medical pod with no memories. Unfortunately the pod is running out of oxygen and the AI, Milo (Mathieu Amalric), refuses to open the pod because she doesn't have admin codes. On the bright side she manages to place a call to the police but they seem not quite as helpful as she hoped...

I like it because even though it's a very limited set (Liz only gets out right at the very end) there's lots to do: figuring out the auto-med and fending off it's attempts to sedate her; recovering her memories and why she's in the pod; and then the larger mystery of what's outside the pod because that was quite a surprise. It manages to be a pretty interesting movie.