A cute example of product innovation based on a cultural insight: a Pez dispenser attached to the camera's hot-shoe makes "picture-takees" produce a more organic smile than having them say cheese (via BoingBoing). Expect a new wave of cameras with red-eye reduction and smile-enhancing features.
One of my most vivid memories from a trip to the Magic Kingdom are Kodak's Picture Spot signs (this picture is someone else's). Wonder why there aren't more of those around the landmarks in tourist destinations. Our office is right next to the Trinity Church, a textbook tourist attraction in Boston. The tourists' picture-taking ritual is rather complex and, I think, culture-dependent.
Tourists at Times Sq.
And this is the picture that started it all.