Owen Gleiberman Chief Film Critic It’s not every day I get to review a documentary about a subject I feel personally close to, so let me put my bias right out there. “Veselka: The Rainbow on the Corner at the Center of the World” is a movie about one of my favorite New York restaurants — and, in fact, countless New Yorkers feel the same way. When you walk into Veselka, the legendary Ukrainian restaurant/diner on the corner of 2nd Ave.