Filmmaker Karan Johar, who is a well known Anchor and Host, has added yet another feather in his cap. He is now also a Radio Jockey (RJ). The Ae Dil Hai Mushkil director will be hosting a show called Calling Karan at Radio Station. Vidya Balan, who is excited about her film “Tumhari Sulu” in which she played an RJ role, when asked about the same. Tumhari sulu was also seen by Sachin tendulkar, sridevi, rekha and others.