Multiple Mirror Effects in Movies

Tango & Cash (1989)

Spoiler Alert !

Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
 
screenshot screenshot screenshot
screenshot screenshot screenshot

Tango and Cash fight their way into Yves Perret's hideout. Automatic doors slide open to reveal a hall of mirrors with Perret holding Tango's kidnapped sister Kiki at gunpoint. Tango and Cash stand dumbfounded for a bit until they both figure out which Perret is the real one, count to three, then both shoot him between the eyes.

Watch the scene on YouTube