8 Amazing Movies That Only Feature One Actor

How do you capture the true essence of heartbreak? Despite what the legion of toothless ensemble rom coms like Valentine's Day and He's Just Not That Into You tried to suggest, it has little to do with montages of unreasonably beautiful women sulking over a bowl of ice cream while they watch Casablanca for the third time that night.

No. Real, devastating heartbreak looks like Ingrid Bergman, frantic to the point of being emotionally crippled, pleading with her lover of the last five years not to marry some other woman the next day. Their love has grown cold and there's simply nothing left but ashes. But that won't stop desperation from oozing out of Bergman's pores in a misguided - but painfully realistic - last ditch attempt at creating one last spark.

The Human Voice was originally written and performed as a one-act stage play in the 1930s, and was brought to television with Bergman cast as the despairing centerpiece.

Amazingly, this one-hour, one-sided phone call is able to capture the rose-colored highs and, perhaps even more effectively, the darkest, humiliating lows of a relationship that only one person has moved on from.

Anyone who's clung to a love that's reached its natural expiration date will empathise with the increasingly blunt gut punches that befalls Bergman as she realises there's nothing she can do to win him back.