ShowBiz Minute: Conaway, Arnie, Beatrice “Grease” Star Jeff Conaway Hospitalized Jose Decamps and Joanna Zacharewicz (2009 AR Show Dance) 'Taxi' and 'Babylon 5' Star Jeff Conaway 'Critical' After Possible … Actor Jeff Conaway , who first made his name in the movie ‘Grease,’ is reportedly in critical condition in hospital, after a possible overdose of paink. Jeff Conaway In Critical Condition After Overdose: 'Taxi' Star … Celebrity Rehab alum Jeff Conaway is back in the hospital following an apparent overdose. Actor Jeff Conaway comatose after apparent drug overdose … Jeff Conaway is in a coma after an apparent drug overdose, Show Tracker reports. Jeff Conaway , who rose to fame in “Grease” and “Taxi” but was known more recently for appearances on “Celebrity Rehab With Dr. Drew,” was unconscious and … Jeff Conaway Hospitalized, In Critical Condition After Overdose … GreASE star Jeff Conaway has been hospitalized after suffering an apparent overdose. The 60 year old, who played rocker Kenickie in the hit 1978 movie musical Grease, has famously battled problems… Jeff Conaway Is In a Coma – Gawker Grease star and former Celebrity Rehab exploitee Jeff Conaway , 60, is in a coma. The Hollywood Reporter spoke to his manager, who says it was caused by an overdose of pain relievers. He was discovered unconscious on May 11. darkat10 says: RT @MACKPHILLIPS : Let's all say a prayer ( or whatever works 4 you) for Jeff Conaway tonight.