Most coffeehouses pour a good, strong cup of joe. Others have great atmosphere, and a few serve appealing food. Blackberry, a hangout that's popular among Washington University undergrads, delivers all three. Blackberry's espressos and lattes go down smooth and sock you with enough caffeine to keep you wide-eyed as you bang out that overdue lit paper. And you won't have to exist on java alone: Blackberry has a surprisingly extensive menu of Mediterranean and American fare, such as hummus, baba ghanouj, tabbouleh, wraps, pizzas and sandwiches.