Video: Paramedics praise 'life-saver' Dustin Hoffman after jogger heart attack After re-starting the Mr Dempster's heart with a defibrilator, Hoffman came over to congratulate the medics on a job well done, according to Luke Sullivan. "At the end of the call we'd loaded the patient into the ambulance, we'd successfully resuscitated him, and just before we drove off Dustin Hoffman approached us and said great job guys," Mr Sullivan recalled. Mr McCarther explained that Hoffman had stayed while the paramedics worked to start their unconcious patient's heart, calmly informing them of what had happened. "He was the perfect bystander, he gave us a great history when we arrived but then didn't get in the way afterwards you know, he was totally calm, collected throughout, stayed for the whole resuscitation which lasted for about 20 minutes, and as we said congratulated us as we were loading the patient and getting him to hospital," he said. While saving people's lives may be an everyday experience for a London medic, coming face to face with a Hollywood star was an unexpected suprise. "I've had a couple of call to people running who have collapsed but I've never had an 'A' list star watching over our shoulder while we were doing it," Mr Sullivan said.