Business cards in films

American Psycho

Flixster - Share Movies

Flixster - Share Movies

The Eternal Sunshine of the Spotless mind; the card falls on the floor and joel reads

"Clementine Kruczynski has had Joel Barish erased from her memory.  Please never mention their relationship to her again.  Thank you." 

In I heart huckabees,  the existentialists have cards this somehow makes things more real.