Mindy McCready

Among the well-known faces who appeared on the first season of VH1's heartbreaking reality series 'Celebrity Rehab With Dr. Drew,' one looked especially familiar. But his body, formerly so agile, resembled that of a hunched-over (albeit youngish-looking) old man. It was the once-vibrant 'Taxi' actor Jeff Conaway, who looked like he's had a rough time of it since his glory days. Sadly, his first season on the show was torturous, and he returned for season 2 to combat drug addiction once again after a number of surgeries.

For three seasons now, doctor-to-the-stars Drew Pinsky has helped everyone from former wrestlers to adult film stars kick their destructive drug habits, some attempts more successful than others. Conaway's is just one of many ongoing recovery stories resulting from the show.

Troubled country singer Mindy McCready, who's currently in recovery from substance abuse, broke down while recounting the story of a night in jail where she decided to change her ways on 'The Dr. Oz Show' (weekdays, syndicated).