First, his new show 'Grandfathered' will debut on FOX on Tuesday September 29. In this show, John plays a successful restaurant owner and lifelong bachelor who finds out he's a dad and a grandfather.

Details.com talked to John and asked him about playing a middle-aged lady-killer, which doesn't seem to like much of a stretch. John replied: "That's the fun of this character, deconstructing a guy the public thinks is me. Some of it is there, I'm not gonna lie. But you can get caught up in presenting something that people need to live vicariously through. Like Howard Stern and Jimmy Kimmel-they don't want to hear that I've only slept with one girl in the last year! They're like, "No, no, keep that quiet!""

Another upcoming show is, of course, Fuller House, the sequel to Full House. When asked about it, Jogn stated: "I fought it for years. I was wrong, but I always thought if I were doing a sitcom, that it should be something smarter, more like Seinfeld. I'm happy to lean into it now. There used to be such a stigma against going backward. But who fucking cares? It's not hurting my career. I got to a point where I thought those yogurt commercials were, but it doesn't matter. Nobody can put themselves up on a pedestal anymore."

When asked about the absence of Mary-Kate and Ashley Olsen on Fuller House, John said: " Everybody knew about it; everybody was asked. I made sure it became a favored- nations thing, so we all make the same amount. Obviously, the twins have a different thing. We're doing 13 episodes, so if they want to change their minds, we'd love to have them . . . but we only need one!"

Even though he has played other roles after Full House ended in 1995, people still see John Stamos as Uncle Jesse. "Recently I did The Best Man on Broadway-as hard as anything I've ever done, with some of the greatest living actors: James Earl Jones and Angela Lansbury. I'd come off stage, and people would still ask me about Full House. But I knew in my heart that I'd just been on stage with James Earl Jones for three hours, so they could twin-talk me all they wanted," John said.

Recently, John had a month long rehab for substance abuse. To Details.com he said about his rehab: "You know, I've had a rough year with my mom dying, so it all came to a head, and it was a turning point. You either continue on that path-and some of it's fun, but a lot of it's not-or there's this other thing, this golden opportunity sitting there with all this work and all this goodwill that you have going for you. That's the key. I feel better than I've felt in a decade."

You can read the full interview here: Details.com