TV and radio host Riki Rachtman may have the tattoos and rocker guy persona of a tough guy but make no mistake—he's a sweetheart. The host of MTV's Headbangers Ball and former owner of the Cathouse club, Rachtman now hosts Racing Rocks on over 120 radio stations and also lives a life free of drugs and alcohol after a multi-year battle with the substances. (No, he wants to assure you, he's actually been absolutely sober for a lot of the "stupid shit" he's done over the past 20 years.) Here, we talk about what got him sober (a drug that starts with m, ends with h and has et in between), how he lives today and everything in between.

Actress and author Kristen Johnston needs no introduction but we're giving her one anyway: the Emmy award-winning star of Third Rock From the Sun who's now starring on TVLand's The Exes (Wednesdays at 10 pm!), Johnston is also the New York Times bestselling author of Guts: The Endless Follies and Tiny Triumphs of a Giant Disaster, which details her struggle with and recovery from addiction. Here we talk about the nitty gritty details of her stomach exploding (that's what taking too many pills will do to you), the part fame played in her addiction and her plan to start up sober high schools in New York.

Mackenzie Phillips had, from the outside, the most glamorous childhood that could be imagined: the daughter of the Mamas and Papas lead singer John Phillips, she starred in American Graffiti and on the hit TV show One Day at a Time as a teenager, while also hitting every club on the Sunset Strip. But her career was stymied by addiction—until 1992, when she went into treatment. After a bout of long-term sobriety, she relapsed and was eventually arrested with heroin in her while on her way to New York for a One Day at a Time reunion on The Rachel Ray Show. The release of her book, High on Arrival—and the revelation in it that she'd had a 10-year consensual sexual relationship with her father—sent the media (and her family) into a tizzy. Now sober again and arguably as enthusiastic about recovery as anyone in the world, Phillips is the Recovery Advocate for the Pasadena Recovery Center and a sought-after speaker on spiritual matters. You'll see why when you listen to this episode.