On a recent episode of "Roseanne," the show paid a poignant tribute to Glenn Quinn, who played Mark Healy in the original series, but died of a drug overdose in 2002. Not only is Quinn’s photo displayed in the Conner family house, but also, Mark’s loss was brought up in a tear-jerking scene between Becky and Darlene.During the episode, Becky opens up about losing Mark, and revealed that the two of them had tried to have children. "I don’t know if you can see yourself frozen in the same place since Mark died, but everybody else can,” Darlene says. “You know, Becky, it’s not betraying Mark to move on." The episode was dedicated to Quinn’s memory. Michael Fishman, who plays D.J. Conner on the series, posted an emotional tribute to Quinn on Facebook last week, after the episode aired. He said that Quinn’s sisters visited the set for several weeks, and his niece even shows up in a later episode of the show. He also said that they never would have replaced him with a different actor. “I have said many times Glenn was an amazing person,” Fishman wrote. “He lit up every room he entered and every set he walked on. As a show we never considered replacing his character. Recasting as some in the media suggested was never even an option. Glenn is irreplaceable.” In the post, Fishman also revealed how the cast remembered Quinn’s legacy before taping every episode of the revival season. “Before each taping we do cast introductions for the audience. We come out of Roseanne and Dan’s master bedroom, through the kitchen to meet the crowd,” he wrote. “It is an exhilarating immediate connection with fans. In that hallway, I brought in Glenn’s picture, we each pass it before every episode we film. We remember Glenn every day. He will always be with us, part of us, part of the #Roseanne show and family.” Read his full post below: