Nia Vardalos' comedy My Big Fat Greek Wedding
has a memorable "yia-yia" character, the aging grandmother who keeps escaping from the house and fearing an invasion of Turks.
The male equivalent is "Papu" or grandfather - often seen twirling worry beads while sitting at a cafenion in the village square. Yia-yias are more likely to be enjoying the same coffee experience in a friend or relative's kitchen, away from the noise and dust of the street.
Yia-yias are getting some attention in this series of ads for Athenos: "Yia-Yia Approved" - and not much is approved by the average yia-yia. Be sure to read the comments as many readers recall their own beloved "yia-yias", both Greek and otherwise.

