Confessor. Feminist. Adult. What the Hell Happened to Howard Stern?: Scattered among the gleefully vulgar mainstays are now intimate exchanges that have made Mr. Stern one of the most deft interviewers in the business. The whole thing is long but here are some "highlights": For years, Mr. Stern was known principally for pushing the limits of taste as the ringmaster of a raunchy circus of pranksters, oddballs and strippers. During his decades on terrestrial radio, his main passions seemed to be, in no particular order, boob jobs, prostitutes, lesbians and flatulence. Introspection and empathy were not fortes. since settling in to his new home on satellite radio, which he did in 2006, Mr. Stern and his show have gradually taken on an improbable new dimension. Scattered among the gleefully vulgar mainstays are now long, starkly intimate live exchanges — character excavations that have made Mr. Stern one of the most deft and engrossing celebrity interviewers in the business and a sought-after stop for stars selling a movie or setting the record straight. “He’s truth serum,” said the comedian Amy Schumer, who has been on the show four times in the last five years. “It’s like you’re under contract to be totally honest in there, and even though it’s being broadcast, it feels super intimate and protected, even though you definitely aren’t.” By all accounts, the metamorphosis has been slow — the result of a combination of therapy, his second marriage, mainstream acceptance and a sixth sense Mr. Stern has about how to evolve with the times. Mr. Stern, 62, has not dropped the adults-only material, and the freedom of satellite radio allows him and his crew to indulge an unconditional love for profanity. But he seems warmer now and his interest in people has never had greater depth or range. The interviews give the show a heft that it didn’t formerly have, turning his New York studio at SiriusXM into a destination of choice for those who a decade ago might have steered clear. Mr. Stern believes his approach isn’t just better radio, but also better for whatever product his guest is promoting. “If someone comes in and the audience feels like ‘Oh my god, I love this person,’ they will want to see their movie,” he said. “It’s a strange thing to say to someone trained in P.R., but it’s the God’s honest truth. If someone has an hour to sit and talk about their life and at the end they say, ‘By the way, that’s what brought me to this movie, or to write this book,’ it’s such a powerful vehicle for promotion.” It wasn’t easy convincing Mr. Stern to do an interview about his skills as an interviewer. Initially he said no, and a week later, when he changed his mind, he would talk only on the phone. The irony did not elude him. Sirius — now SiriusXM, after merging with its biggest rival — currently has 30 million subscribers. Exactly how many are listening to Mr. Stern the company won’t say, but his chops as an interviewer are a significant part of his appeal. Mr. Stern still claims on the show to be an anxious mess, but he sounds calmer and more content. He plainly roots for all his guests and his questions reflect sensitivities unimaginable even a few years ago. Friends and fans attribute Mr. Stern’s evolution in large part to his marriage, in 2008, to Beth Ostrosky Stern, a former model who not only has left him lovestruck, but turned him into an animal rescue advocate. Serving as a judge on NBC’s “America’s Got Talent,” which he did for four years, also proved that his days as an outsider scrabbling for mainstream credibility were behind him. No set schedule is kept for interviews, which Mr. Stern conducts Monday through Wednesday, the only days he now works, after a contract renegotiation in 2011. To prepare, he and a couple staffers will read and compile notes over the course of days. Mr. Stern might strategize for as long as a week, figuring out what he would want to hear if he were listening. Right before the interview begins, a point man will read aloud the team’s collective jottings. “And then it just sticks in my head and I memorize it,” Mr. Stern said. “I don’t love the process. I get very anxious and uncomfortable because I want it to be so good. I want the audience to enjoy it, I want the performer to feel comfortable. It’s a whole psycho deal.” Anyone got that graphic of Beth saying "thanks for blaming Marci Turk"?