Google's "Parisian Love" ad is an extremely potent, real world example of using similar emotions to sell a product:
It combines everything that we take for granted about Google -- the spelling correction, ability to search through multiple datasets intelligently (flight schedules, for example), location-dependent search.
But none of it is presented this way; it's all just seen through the lens of a man navigating life and love. The technology is unseen, and not even mentioned, but the power is very, very real.