VH1’s “Celebrity rehab” is set to start and share with willing viewers the pain and struggle of 12 somewhat famous somebodies who are not afraid to show the world their most humanly embarrassing moments.

 The second season of Dr. Drew Pinsky’s televised behavior therapy of would-be sober celebrities will also feature actor Gary Busey, reports E! Online, as the understanding and compassionate mentor who has already been through the highs and lows of rehab.

Busey can proudly and confidently say that he overcame his cocaine addiction some 13 years ago and that he has been sober since. Who better to understand the challenges and suffering of battling substance addiction than someone who has already experienced them?

Among the 12 hopefuls Pinsky and Busey are to accompany and guard towards sobriety are Sean Stewart, son of singer Rod Stewart, brother of socialite Kimberly Stewart; model Amber Smith; actress Tawny Kitaen; Guns N’ Roses member Steven Adler and Rodney King.

Jeff Conaway returns for his second season, joined by first-season “American Idol” finalist Nikki McKibbin.

Filming is reportedly already underway for the second season of “Celebrity Rehab,” set to debut in October on VH1.

The first season of the interestingly-themed show featured actor Daniel Baldwin, adult film actress actor Mary Carey, actress Brigitte Nielsen, former “American Idol” contestant Jessica Sierra and others.

The new series will consist of eight hour-long episodes that follow the participants’ intensive 21-day recovery process.

VH1 is prepared to pay expenses for participants who complete the three-week program and go through another at least three months in a treatment facility.

Pinsky, who is Medical Director of the Department of Chemical Dependency Services at Southern California’s Las Encinas Hospital as well as host of radio series “Loveline,” will probably welcome his new patients at the Pasadena Recovery Center, the location of the first season.