I go to a specific one near my work everyday for a quick pick me up when ever I'm on my lunch break. They've gotten so used to me there that occasionally when I come in, the barista (and the manager when he happens to see me) gives me my drink on the house. It doesn't hurt.

The people there are really friendly. And courteous. I've seen customers bark crazy orders and they all keep their cool and reflect a happy smile regardless.