Who would have thought Sherry Vine, queen of snark, would make a stellar psychiatrist? Vine stars in “Welcome to New York” as Dr. Kitty Rosenblatt, the straight-talking and frisky psychiatrist, and is so convincing in her role that it may just as well be her real-life alter ego. “Welcome” chronicles the experiences of a series of newbie New Yorkers who, while coming to terms with big-city life, enlist Rosenblatt for advice. Apart from Vine, the...