Rumors have been swirling about who will participate in Celebrity Rehab 2 on VH1. Now it looks like we have the official list, which includes nutty Gary Busey, Celebrity Rehab’s first season cast member Jeff Conaway, Surreal Life’s Tawny Kitaen and American Idol contestant Nicky McKibbon.

Gary Busey won’t be in treatment though – strangely enough, he’ll be a mentor to the rehab patients! Busey kicked his cocaine addiction 13 years ago.

Dr. Drew, naturally, will assist the rehabbers once again on Celebrity Rehab 2, which also includes Sean Stewart (son of Rod Stewart), model/actress Amber Smith, Rodney King, and Guns N’ Roses’ Steven Adler.

Celebrity Rehab 2 begins airing in October.