If there's anything the public loves, it's a successful comeback, and the more scandalous the nadir, the most spectacular the ascent. Hollywood lends itself to such stories of drug-laden lows and redemptive highs, and these celebs are no different, falling on and off of the wagon at various times of their lives.
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Keith Urban checked himself into the Betty Ford Center in California in October, 2006 for rehabilitation from an alcohol and drug abuse problem. Short after, Urban issued a public statement apologizing to wife Nichole Kidman and other friends and family for the damage he had caused them and for "letting his guard down." Urban has stayed sober since his rehabilitation. UPI/Phil McCarten
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