The “Roseanne” revival has confirmed that it’s adding “Big Bang Theory” star Johnny Galecki. Star Roseanne Barr tweeted, “We have got our Johnny Galecki back on ‘Roseanne’ this episode – what a joy to work with such a deeply empathetic actor. Very moving 4 all of us. #JOY.” The reboot is close to Barr's heart, and she has expressed her feelings about the revived show several times over Twitter. She wrote, “This 10th season of ‘Roseanne’ is just a dream come true for an old lady comic who fought so hard 2 honor working class ppl in America." The “Roseanne” revival is set to air on ABC in 2018.