Doug Salomon
Starbucks is just an example. You could do the same at any coffee shop that serves espresso drinks.
Quick tip:
The next time you're at Starbucks, ordering an Americano, ask them to make it with a longshot.
This means that they will run the water through the grounds a bit longer, resulting in a slightly stronger drink (since this replaces some of the water they would have otherwise added).
It also tastes better.