In the first episode, where Rachel leaves Barry at the altar and then she calls him to try to explain why she did it, she keeps getting cut off by the answering machine. She calls back, then states that some girl is going to be incredibly lucky to be Mrs. Barry Finkle. In the episode entitled The Evil Orthodontist (disk 4 season 1), Mindy tells Rachel that she is still going to marry Barry, stating "she still really wants to be Mrs. Dr. Barry Farber, D.D.S."

So what is his real last name?