Jeff Conaway
Jeffrey Charles William Michael "Jeff" Conaway (October 5, 1950 – May 27, 2011) was an American actor known for his roles in the movie Grease and two US television series Taxi and Babylon 5. Conaway was also featured in the first and second season of the reality television series, Celebrity Rehab with Dr. Drew. In May 2011 after spending just over two weeks in the hospital, Conaway died at the age of 60 due to complications related to pneumonia and the degenerative brain condition known as encephalopathy.