Power Star Pawan Kalyan is a angry man if on the sets discipline comes into account. Recently, the actor showed his power - not in the reel life but in real life to Ganesh Babu, the producer of his upcoming film Gabbar Singh. If the rumors are to be believed Pawan Kalyan has slapped Ganesh Babu on the sets when the latter tried to interfere on some stuff which was no way related to him And an irritated Power Star showed off his 'power' to Ganesh in front of the unit members by slapping him. This incident took place   when Ganesh Babu's scenes were canned in Mahesh Babu's Businessman. What made Pawan irritating? Ganesh Babu or Mahesh Babu's Businessman?