Source Code (2011) and The Man From Earth (2007).

I shan't discuss the plots of either other than say that like Inception (2010) they are pretty solid philosophical 'mind toy' plots.

While you watch them you will probably go along with the game and hopefully roll around the possibilities for some time after the films have finished.

They are both well cast, economically directed (even if The Man From Earth is more of a stage performance experience than a cinematic one).

If The Twilight Zone was continuously being made until the present day, both would have been very satisfactory episodes.

Both 3.5 infinite probability matrices out of 5.