Oh man, SO GOOD and I've only tried two different types of drinks here. I highly recommend the Iced Wookie if you want a strong, creamy coffee drink. (Similar to an iced kicker or a white chocolate mocha if you know what those are). I get this as a treat since it is pretty pricey (around $4+) although they do have a stamp card so make sure to get one of those. You can get a free drink of your choice once you get all the stamps. I've tried their iced teas which they make for you. Takes a bit longer, but the berry one is A+ if you don't drink coffee.
The service is always great and they're so so friendly (especially the location nearby the library). They have two locations, with the other one being in the cafeteria. Both are great!