Every time I'm in Pittsburgh I find it hard to stay away from Espresso a Mano.  I'm a little obsessed with unique coffee, so I usually find myself ordering their specialty pour-over cup no matter what.  I've enjoyed single source Sidamo beans from Ethiopia here regularly.  In addition to the coffee, they offer ample seating area and free WiFi for guests to mingle and work.  When the weather is nice, they'll open the garage door up for an al-fresco experience.  Please go here and support good coffee.