The new Cappuccino on the Bay cafe at the corner of Avenue Z and East 17 Street was clean and dimly lit enough for a private after-dinner snack and pick-me-up. [http://www.flickr.com/photos/26795413@N08/3708715151/] [http://www.flickr.com/photos/26795413@N08/3709533670/]The barista-in-chief stood at