Original cast members of beloved 'Dallas' TV show reunite

Patrick Duffy, Charlene Tilton, Linda Gray and Steve Kanaly reflect on the legacy of the iconic show 40 years after it premiered.
4:08 | 04/02/18

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Transcript for Original cast members of beloved 'Dallas' TV show reunite
The show is celebrating a milestone. 40 years ago today, the first episode aired. I got to sit down with Bobby, Lucy, sue Ellen, and ray. We talk about how close they truly are. And a possible reboot. Smoet ??? who could forget the show, "Dallas." That theme song. The groundbreaking drama. The sensation when almost 90 million Americans watched one Friday night when the world learned, what shot J.R.? It all premiered 40 years ago. When you look at the photo, does it feel like yesterday? N't yes, I hated my plows. It felt like a dishcloth. I said, do we have anything nice sner she said, no, nobody is going the see that picture anywhere way. Just put it on. They thought the show would be a five-episode miniseries. Correct. We're still here. And every network president is gone. What would you say if cow could put your finger on the reason the show was so successful? It was Charlene. You said it. The chemistry we had off camera came through. It wasn't fake. It was real. My wife made fun of me every day because I would leave for work early. What am I supposed to do about my other business I have pending? She would say, you don't have to leave for another45 minutes. I said, I know. I wanted to get there and play pip wanted to be there with my friends. Reporter: The show was a trail krn blazer. Tackling topics such as rape and breast cancer. When Barbara bell Geddes had the mastectomy, it was the first time it was treated with respect and honor. Reporter: And sue Ellen's alcoholism. I heard there people who went to A.A. We did one of the first dpai gave episodes. He wasn't just my roommate. We were lovers. You had to use the word homosexual. You couldn't say gay. Lucy was engaged to the young gentleman who came out and admitted he was gay. They wrote that so beautifully. Reporter: Larry Hagman was the show's star villain. Hery mains the glue six years after his death. What was it like to be in a scene with Larry. Heaven. One of the best actors ever. He would hate it when I would tell enon camera how wonderful and lovely and generous and kind he was. He would say, you're not supposed to like me. You can't tell them how nice I am. He was a bad boy sometimes. He would eat onions before kissing scenes. You're kidding? No, I'm not kidding. It was that or peanut butter. I had to, think, okay, what is it going to be today? I could see where his house is. We were neighbors. I think of him every day. He was my best friend. I can't think of him without smiling. Without remembering. Reporter: Patrick Duffy left the show in 1985, returned a year later, setting yet another precedent for TV plot 'ties. The fact that it was all a dream, that was controversial back then. It's cost audience. Cost about a 10% hit. A lot of people didn't like it. They felt cheated. We got five more years out of it. 14 seasons. 257 episodes. Two reunion movies. A reboot for tnt. Are you up for a third? Is it over? Who knows? Never say never. Never say never. The Bobby Ewing show I think would the a smash. Of course you would, darling. Really? I would find a place for you all. I swear. He thought about that reboot a little bit. That show was just so influential. On American culture. Particularly the city of Dallas. You're right about the theme song. The '07s and '80s shows, the theme song so important. John Ross Jr.

This transcript has been automatically generated and may not be 100% accurate.

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