My first inkling that the americano could be a legitimate beverage occurred at Caltech when one was ordered by a colleague at the cafe. I was taken aback. This was an otherwise cultured individual with discriminating tastes... I monitored his expressions for signs of irony, but there were none; this colleague generally exhibits the best poker face, and I imagine he might undertake a radical action with a straight face just to observe the reactions of his comrades.
Later I returned to privately sample this questionable beverage, and I found it distinctly agreeable, with the flavor of espresso but the quantity one requires when working out a problem over coffee, and a flavor somehow superior to those other espresso drinks diluted with milk.
Brewed coffee can be very good, but outside of America's Pacific Northwest it tends towards the putrid; the Americano, on the other hand, provides a certain guaranteed minimum of strength and quality. Here in Louisiana it has become my caffeinated beverage of choice.