Jeff Conaway who became world famous for his role in Grease, passed away on May 27th at the age of 60. To us science fiction fans, Jeff Conaway was probably most known for portraying Zack Allen on Babylon 5. Jeff, a long time opiate addict (he appeared on Celebrity Rehab twice), was found unconscious in his home on May 11th. It was established that he suffered from pneumonia with a severe sepsis thanks to his addiction. Apparently, he had overdosed slightly, vomited, and inhaled it into his lungs, causing the pneumonia. He was kept in a medically induced coma until doctors determined there was nothing left to do. Jeff's family decided to take him off life support on May 27th and he passed away shortly after that, never regaining conciousness. Rest in peace, Jeff.