“Strangers in a New York subway car bound for -- who knows where? -- may not seem to be the most surefire bet for a musical… Yet Happiness at Lincoln Center Theater’s intimate Mitzi E. Newhouse stage, does more than just offer 110 minutes of flawless, nonstop entertainment... Best of all, the painterly uses to which Stroman puts the stage, and her inventive choreography wherein certain fresh steps and holds eloquently convey happiness. The subway car itself dances.”