About Jeff Conaway
Jeffrey Charles William Michael Conaway was an American actor. He portrayed Kenickie in the film Grease and had roles in three television series: struggling actor Bobby Wheeler in Taxi (1978–1982), Prince Erik Greystone in Wizards and Warriors, and security officer Zack Allan on Babylon 5. Conaway was featured in the first and second seasons of the reality television series Celebrity Rehab with Dr. Drew. Taxi writer Sam Simon recalled in 2008 that during production of Simon's first script for that show, a missing Conaway was found in his dressing room, too high on drugs to perform. Conaway's appearance on the show's first and second seasons drew much attention because of his severely crippled state, his constant threats to leave the facility, and his frequent inability to speak clearly.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.