Jeff Conaway

A feathered-hair heartthrob during a brief period in the 1970s, Jeff Conaway's career became rocky following his moment in the sun as Kenickie in the musical "Grease" (1978) and his stint on the classic ABC sitcom, "Taxi" (ABC, 1978-1982). His three years on the sci-fi series "Babylon 5" (TNT, 1994-98) notwithstanding, Conaway's career during the 1980s and 1990s consisted mainly of made-for-TV and direct-to-video films, with his high-profile drug and alcohol abuse earning him the most attention. From his appearance in 2006 on VH1's "Celebrity Fit Club" (VH1, 2005-10), the actor slid further, ending up on the network's "Celebrity Rehab with Dr. Drew" (VH1, 2008-13), where the frail and seemingly suicidal actor bore almost no resemblance to the handsome smart aleck whose career had once been so promising. In the end, Conaway became a kind of cautionary tale of addiction, dying much too young after numerous public struggles.